Page 1
Centrifugal Roof Exhaust Fans
Series L
Low Silhouette
Louvered Penthouse Style
LDP/LBP
Fabra Hood Style
LD/LB
May
2009
Page 2
Series L
Centrifugal Roof Exhaust Fans
Greenheck’s Series L, low silhouette, models LD, LB, LDP, and LBP centrifugal roof exhaust fans
provide the industry’s best performance and durability for general clean air applications.
• Broadest performance in the industry, up to 1.25 in. wg (311 Pa) and 37,500 cfm (63,713 m
• Performance as cataloged is assured. All fan sizes are tested in our AMCA Accredited Laboratory,
and all models are licensed to bear the AMCA sound and air performance seals.
• UL Listed for electrical.*
• Greenheck subjects these products to extensive life testing, assuring you the fans will provide
years of reliable performance.
Greenheck Fan Corporation certifies the
models LD, LDP, LB, and LBP shown
herein are licensed to bear the AMCA
seal. The ratings shown are based on
tests and procedures performed in
accordance with AMCA Publication 211
and AMCA Publication 311 and comply
with the requirements of the AMCA
Certified Ratings Program.
*UL is optional and must be specified.
Models LD, LDP, LB, and LBP are
listed for electrical (UL/cUL 705)
File no. E40001.
3
/hr).
Leading Edge Technical Support
When you need extensive product or installation and operating manual (IOM)
information, our products are supported by the industry’s best product literature,
electronic media and computer aided product selection (CAPS) program. You’ll
also find this information on our website at www.greenheck.com
You can always count on personal service and expertise from our national and
international representative organization. To locate your nearest Greenheck
representative, call 715-359-6171 or visit our website at www.greenheck.com
Quick Build Programs
Our Quick Build (QB) Program ensures rapid response time when your needs
require a fast turnaround. Select from more than 40 configurations of the
Series L, low silhouette model fan and we will manufacture and ship them
within ten days. We have strategically located many warehouses across the
United States and internationally to fill your request at a moments notice.
World Class Manufacturing
Greenheck’s skilled production workers use cost-effective machines and
unique dies designed and built by our own engineers to add innovative
features and greater strength to our centrifugal roof exhaust fans. Our
advanced manufacturing processes and quality control procedures
always ensure the highest product quality. And just to be sure you
get the peace-of-mind you expect when you specify Greenheck, our
assembly inspectors test run and monitor every fan before it leaves the
factory. Results of these tests are kept in permanent records for future
reference.
2
Page 3
Unique Construction Features
Louvered Penthouse Style
• Hinged Cover - All sizes feature an
aluminum cover which may be hinged to
provide quick access to the motor and
drive assembly. Covers are fastened down
with a quick release hood latch.
• Large Interior Dimensions - All sizes allow
complete accessibility from above. Interior
dimensions offer clearance for inspection,
cleaning, or maintenance of the motor,
wheel, belt(s), and drives.
• Strength & Weather Resistant - Each unit
features storm resistant aluminum louver
blades with mitered corners. For decades,
our storm resistant blades have proven
highly effective. Each sturdy extruded
aluminum louver blade has a material
thickness of 0.080 inches.
Greenheck’s louvered
penthouse hoods
feature heavy gauge
extruded aluminum
louvers with mitered
corners for a clean,
finished appearance
and weather resistant
construction.
The interior vertical edge of the curb cap
forms the throat and weathershield. Each
corner is also shielded to prevent leakage.
Penthouses are available in aluminum for
lasting durability and appearance.
Fabra Hood Style
• Hinged Hood - All sizes feature a hood
which may be hinged to provide quick
access to the motor and drive assembly.
Access may be gained by simply removing
two of the four hood fasteners or all
fasteners for complete removal.
• Large Interior Dimensions - All sizes allow
complete accessibility. Interior dimensions
offer clearance for inspection, cleaning, or
maintenance of the motor, wheel, belt(s),
and drives.
• Strength & Weather Resistance - The
hood is designed with arched panels
manufactured of heavy gauge, precision roll
formed steel with interlocking edges. Each
interlocking rib creates a tight, weather
resistant seal. Heavy gauge steel support
members provide structural strength.
The first hood was put into service over
30years ago.
Greenheck’s interlocking rib design combines
four material thicknesses with I-beam
design principles
producing a
hood far superior
in strength to
conventional
designs (an
important feature
in high wind and
snow load regions).
Formed channels adjacent to the ribs provide
water drainage to ensure weather tightness.
Hoods are available in galvanized steel,
coated steel, or aluminum construction.
3
Page 4
1
6
10
5
12
2
9
15
13
13
11
14
LB/LD
8
4
6
10
11
7
Fabra Hood Style
5
9
3
LBP/LDP
Louvered Penthouse Style
4
Page 5
Unique Construction Features
Recommended
Duct and
Damper Size
Recommended
Roof Opening
1 1/4 in.
(32 mm)
3/4 in.
(19 mm)
Damper
8 to 12 in.
(203 to 305 mm)
1 1/4 in.
(32 mm)
1
FABRA HOOD STYLE - Models LD and LB have
a rib-lock galvanized housing. Hood panels are
interlocked and attached to sturdy galvanized
rails. (Aluminum housings are optional).
HINGED ACCESS - The entire hood assembly
2
on models LD and LB can be hinged open for
access to the internal fan components.
LOUVERED PENTHOUSE - Models LDP and
3
LBP penthouse style housings are constructed
of heavy extruded aluminum louvers with
mitered and welded corners.
HOOD COVER - Models LDP and LBP
4
aluminum hood covers are hinged and
removable for access.
DRIVE FRAME - Constructed from heavy
5
gauge galvanized steel. Belt adjustment is
accomplished by loosening fasteners, sliding
the motor plate, and retightening fasteners.
FAN SHAFT - Precisely sized, ground, and
6
polished so the first critical speed is at least
25% over the maximum operating speed. Close
tolerances between the shaft and bearing result
in longer bearing life.
BEARINGS - 100% factory tested and designed
7
specifically for air handling applications with
a minimum L10 life in excess of 100,000 hours
(L50 average life of 500,000 hours).
CURB CAP - Curb cap has prepunched
8
mounting holes to ensure correct attachment to
the curb.
9
MOTOR - All motors are carefully matched to
the fan load to provide years of trouble free
operation.
DRIVE ASSEMBLY - Drives are oversized 150%
10
of driven horsepower. Machined cast iron
pulleys are factory set to the required RPM and
are adjustable for final system balancing. Belts
are static free and oil resistant.
11
WHEEL - An aluminum, backward inclined,
non-overloading, centrifugal wheel is utilized
to deliver maximum efficiency. Each wheel is
statically and dynamically balanced.
VIBRATION ISOLATORS - Support the drive
12
assembly and wheel without steel to steel
contact providing long life and quiet operation.
BIRDSCREEN - Galvanized rigid wire protects
13
the fan’s discharge from birds or small objects.
(Aluminum birdscreen is optional).
WINDBAND - Lower windband assembly
14
ensures weathertight and rigid unit
construction.
DISCONNECT SWITCH - NEMA-1 switch is
15
factory mounted. Wiring from the motor to the
disconnect enclosure is provided as standard.
All wiring and electrical components comply
with the National Electric Codes (NEC) and are
UL Listed or Recognized.
CONDUIT CHASE - A large diameter conduit for
16
installing electrical wiring through the curb cap
into the motor compartment. (Not shown)
Standard Installation
Models LB, LD, LBP, and LDP exhaust fans are designed
to meet the needs of general clean air applications. Tests
have been conducted to ensure safe and reliable fans
capable of withstanding normal exhaust conditions.
When roofing materials extend to the top of the curb,
roof curbs should be 11⁄2 in. (38 mm) (3/4 in. (19 mm) on
a side) less than the unit curb cap to allow for roofing
and flashing.
For recommended duct size, damper size, and
roof opening dimensions, refer to CAPS or the
performance data pages.
Installation must include a means for inspecting,
cleaning, and servicing the exhaust fan.
Due to the varying airstreams encountered in
commercial ventilation, system designers must
be aware of national, state, and local codes and
guidelines governing these installations. Local code
authorities should be consulted before proceeding
with any ventilation project.
5
Page 6
Options and Accessories
BIRDSCREEN - Galvanized mesh is standard.
Optional aluminum or stainless steel rigid wire are
also available.
HOOD INSULATION - Hood insulation is dual-
density to minimize condensation, reduce thermal
transfer, and enhance sound absorption at high and
low frequencies.
LIFTING LUGS - Four heavy gauge steel brackets
are available to provide lifting points when raising
the fan to the roof.
TIE DOWN POINTS - Four heavy gauge steel
brackets are available to secure the fan in heavy
wind applications. Cables and anchors by others.
COATINGS - All Greenheck coatings and resistance
charts can be found in the performance coatings
catalog. A wide variety of coatings and colors are
available in two categories:
Decorative coatings – Sixteen standard colors
are available.
Protective coatings – Five electrostatic applied
powder coatings are available to protect against
most environments.
DAMPERS - Designed to
prevent outside air from
entering back into the building
when fan is off. Options include
gravity and motorized dampers.
Damper sizes are shown on
each performance data page.
CURB SEAL - Rubber seal between fan and curb
to ensure proper sealing when attached to a curb.
DISCONNECT SWITCHES -
A wide selection of NEMA
rated switches are available
for positive electrical shutoff
and safety, including: dusttight, rainproof, and corrosionresistant. Switches may be
internally or externally mounted.
SPEED CONTROLLERS - Available for use with
shaded pole and permanent split capacitor (PSC)
open motors on models LD and LDP fans. They
provide an economical means of system balancing
with direct drive fans.
CURB EXTENSIONS - Extensions raise the fan
discharge above the roof line and provide an
accessible mounting location for dampers.
Insect screen bases
constructed with
a removable
fine mesh are
recommended for
applications where insect
entry must be prevented. Curb
extensions are not available with LDP and
LBP severe duty construction models.
ROOF CURBS - Prefabricated roof curbs reduce
installation time and costs by ensuring compatibility
between the fan, curb and roof opening. All curbs
are insulated with fiberglass.
A wide variety of roof curbs
are available including
flanged, pitched and
sound-absorbing.
6
Page 7
Severe Duty Option
OUTSIDE CURB DIMENSION
ROOF OPENING
12, 18 OR 24 INCHES
(305, 457, 610 MM)
THROAT DIMENSION
(ROOF OPENING)
1 INCH (25 MM) INSULATION
6 INCH x 3 INCH
(152 MM x 76 MM)
STEEL MOUNTING ANGLE
(12 GAUGE MINIMUM)
RECOMMENDED
DUCT & DAMPER SIZE
1-1/4 INCH
(32 MM)
4 IN.
(102 MM)
1-3/4 INCH (44 MM)
3/4 INCH (19 MM)
4 IN.
(102 MM)
4 IN.
(102 MM)
4 IN
(102 MM)
1-3/4 INCH
(44 MM)
2-1/2 INCH (64 MM)
2-1/2 INCH
(64 MM)
1-3/4 INCH (44 MM)
CONCRETE
ROOF TRUSS
CORRUGATED
ROOF DECK
SEVERE DUTY - Specifically designed for applications with extremely
high structural design load requirements. The severe duty models LDP
and LBP are far superior to any centrifugal roof exhaust fan currently
in the market. Designed with structural steel supports and ESD-603D
louver blades, the severe duty louver enclosure (SDLE) may be used
in any application which requires a fan to endure high winds with the
potential of wind blown debris. The louvered housing has been tested
in accordance with the following Miami-Dade test protocols:
• Large Missile Impact Test - TAS-201-94
• Uniform Static Air Pressure - TAS-202-94
• Uniform Cyclic Wind Loading - TAS-203-94
To meet the above protocols, the severe duty fan must be mounted
on a severe duty roof curb, which is attached directly to the building
structure. Maximum design load is 140 psf.
Available on sizes
• LDP - 60 though 120
• LBP - 10 through 30
Weights and dimensions will vary from standard LDP and LBP construction.
NOTICE OF ACCEPTANCE
NUMBER 08-0429.05
Severe Duty Installation
Models LDP and LBP severe duty exhaust fans are designed to meet the needs of general clean
air applications. Tests have been conducted to ensure safe, rugged and reliable fans capable of
withstanding severe exhaust conditions.
The severe duty roof curb model SD is
supplied with this product and is designed
with 12 gauge welded steel construction.
Greenheck recommends the severe duty curb
to be anchored to the structure of the building.
Dependent upon roofing material it shall be
bolted and welded. For recommended duct
size, refer to CAPS or installation manual.
Installation must include a means for
inspecting, cleaning, and servicing the
exhaust fan.
Due to the varying airstreams encountered
in commercial ventilation, system designers
must be aware of national, state, and local
codes and guidelines governing these
installations. Local code authorities should
be consulted before proceeding with any
ventilation project.
7
Page 8
Severe Duty Dimensions
LDP - SEVERE DUTY DIMENSIONS
B
C
D
E
A
A
LBP - SEVERE DUTY DIMENSIONS
CB
D
E
AA
Model
Number
A B C D E
Damper
Size
(square)
60
65
17
70
(432)
347⁄8
(886)
347⁄8
(886)
175⁄8
(448)
13⁄4
(44)
8
(203)
75
LDP
80
85
90
19
(483)
367⁄8
(934)
367⁄8
(934)
175⁄8
(448)
13⁄4
(44)
10
(254)
95
LBP
100
120
10
14
18
21
24
30
(559)
(559)
(660)
(762)
(864)
(1016)
22
22
26
30
34
40
397⁄8
(1013)
397⁄8
(1013)
437⁄8
(1114)
477⁄8
(1216)
517⁄8
(1318)
577⁄8
(1470)
397⁄8
(1013)
503⁄8
(1280)
517⁄8
(1318)
577⁄8
(1470)
617⁄8
(1572)
697⁄8
(1775)
195⁄8
(498)
181⁄8
(460)
181⁄8
(460)
245⁄8
(625)
245⁄8
(625)
271⁄4
(692)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
13⁄4
(44)
12
(305)
12
(305)
16
(406)
18
(457)
24
(610)
30
(762)
All dimensions are in inches (millimeters). Weight in pounds (kilograms). *Weight shown is the largest cataloged Open Drip Proof motor.
Roof
Opening
(square)
101⁄2
(267)
121⁄2
(318)
141⁄2
(368)
101⁄2
(267)
101⁄2
(267)
101⁄2
(267)
1
⁄2
10
(267)
101⁄2
(267)
101⁄2
(267)
Weight*
375
(170)
400
(181)
425
(193)
550
(249)
550
(249)
550
(249)
700
(318)
800
(363)
950
(431)
Cover
Thickness
0.100
(0.045)
aluminum
0.100
(0.045)
aluminum
Louver
Thickness
0.125
(0.056)
aluminum
0.125
(0.056)
aluminum
Curb Cap
Thickness
0.25
(0.113)
steel
0.25
(0.113)
steel
8
Page 9
Severe Duty Curb
Installation Options
Concrete
Steel
12, 18, OR 24 INCHES
(305, 457, or 610 MM)
MINIMUM CONCRETE
STRENGTH OF 3000 PSI
4 INCH (102 MM)
MOUNTING FLANGE
CURB HEIGHT
12, 18, OR 24 INCHES
(305, 457, 610 MM)
1.75 INCH (44 MM)
CURB HEIGHT
TYPICAL
THROAT DIMENSION AND ROOF OPENING EQUAL OUTSIDE CURB DIMENSION MINUS 3.5 INCHES (89 MM)
1.75 INCH
(44 MM)
4 INCH (102 MM)
MOUNTING FLANGE
TYPICAL
OUTSIDE CURB DIMENSION
THROAT DIMENSION
(ROOF OPENING)
1 INCH (25 MM) INSULATION
ROOF OPENING
1.75 INCH (44 MM)
OUTSIDE FLANGE DIMENSION
OUTSIDE CURB DIMENSION
THROAT DIMENSION
(ROOF OPENING)
1 INCH (25 MM) INSULATION
ROOF OPENING
6 X 3 INCH (152 x 76 mm)
STEEL MOUNTING ANGLE
(12 GAUGE MINIMUM)
1.75 INCH (44 MM)
HILTI KB11, 3/8-16 X 3 ON
12 INCH (305 MM) MAXIMUM CENTERS.
MINIMUM TWO PER SIDE.
2.5 INCH (57 MM)
EMBEDMENT
2.25 INCH (57 MM) TYPICAL
4 INCH (102 MM) TYPICAL
1.75 INCH (44 MM)
HILTI KWIK-FLEX 12-14 SCREW, NO. 3 POINT.
THREE (3) FASTENERS EACH CORNER AND
MAXIMUM OF 4.5 INCHES
ADD ADDITIONAL FASTENERS TO SATISFY.
CORNER TOP VIEW
(114 mm) SPACING;
CORRUGATED
ROOF DECK
ROOF TRUSS
OUTSIDE FLANGE DIMENSION
THROAT DIMENSION AND ROOF OPENING EQUAL OUTSIDE CURB DIMENSION MINUS 3.5 INCHES
1.75 INCH (44 MM)
2.25 INCH
4 INCH
(89 MM)
(57 MM) TYPICAL
(102 MM) TYPICAL
Model Number Code
The model number system is designed to completely identify the fan. The correct code letters must be
specified to designate belt or direct drive. The remainder of the model number is determined by the size
and performance selected from the following pages.
LB - 30 - 7
Model
LD - Fabra Hood Direct Drive
LB - Fabra Hood Belt Drive
LDP - Louvered Penthouse Direct Drive
LBP - Louvered Penthouse Belt Drive
Fan Size
LD/LDP 60 thru 120
LB/LBP 10 thru 54
Motor hp (Belt Drive only)
6 = 1/6 10 = 1 50 = 5
4 = 1/4 15 = 11⁄2 75 = 71⁄2
3 = 1/3 20 = 2 100 = 10
5 = 1/2 30 = 3 150 = 15
7 = 3/4
Motor RPM (Direct Drive only)
A = 1725
B = 1140
C = 860
99
Page 10
LD/LDP 60-75
Direct Drive
LD Dimensions
27
(686)
17
(432)
13⁄4
(44)
22
(559)
(432)
131⁄2
(343)
LDP Dimensions
23
(584)
17
(432)
Aluminum
49 (22)
(44)
23
(584)
17
(432)
111⁄2
(292)
LD 60 thru LD 75 LDP 60 thru LDP 75
Hood Thickness 24 ga Cover Thickness - 0.064 (0.029)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 8 (203) 8 (203)
Roof Opening Square 101⁄2 (267) 101⁄2 (267)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LDP dimensions.
Galvanized
(17)
37
2
(51)
13
(330)
131⁄2
(343)
Static Pressure Pa
Static Pressure Pa
0.6
140
0.5
120
100
0.4
80
0.3
60
0.2
40
Static Pressure in. wg
0.1
20
0
0.0
0 50 100 150 200 250 300
0 50 100 150 200 250 300 350 400 450 500
0.6
140
0.5
120
100
0.4
80
0.3
60
0.2
40
Static Pressure in. wg
0.1
20
0.0
0
0 50 100 150 200 250 300 350 400
0 100 200 300 400 500 600
Size 60 and 65
LD/LDP-65
LD/LDP-60
cfm
3
/hr
m
Size 70 and 75
LD/LDP-70
cfm
3
m
/hr
RPM
Density 0.075 lb/ft
RPM
Density 0.075 lb/ft
LD/LDP-75
3
3
Model
Number
LD/LDP-60 1/60 1590* 51 W
LD/LDP-65 1/30 1680* 70 W
LD/LDP-70 1/30 1665* 73 W
LD/LDP-75 1/25 1620* 79 W
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
Motor HPFan
RPM
Watts
0 0.1 0.125 0.2 0.25 0.3 0.375 0.4 0.45 0.5
CFM 202 171 164 139 119 97
Sones 4.8 4.3 4.3 4.0 3.8 3.6
CFM 274 245 238 208 187 165 129 112
Sones 5.6 5.3 5.2 5.0 5.1 5.1 5.1 5.2
CFM 360 324 314 282 257 231 188 171 132
Sones 6.4 6.0 5.9 5.5 5.4 5.3 5.2 5.1 5.0
CFM 400 360 351 317 290 264 222 206 168 122
Sones 5.8 5.2 5.1 4.9 4.7 4.5 4.2 4.1 4.0 3.8
CFM / Static Pressure in Inches wg
10
Page 11
LD/LDP 80-95
Direct Drive
LD Dimensions
27
(686)
19
(483)
13⁄4
(44)
28
(711)
19
(483)
131⁄2
(343)
LDP Dimensions
25
(635)
19
(483)
Aluminum
63 (29)
13⁄4
(44)
25
(635)
19
(483)
121⁄2
(318)
LD 80 thru LD 95 LDP 80 thru LDP 95
Hood Thickness 24 ga Cover Thickness - 0.064 (0.029)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 10 (254) 10 (254)
Roof Opening Square 121⁄2 (318) 121⁄2 (318)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LDP dimensions.
Galvanized
(20)
45
4
(102)
16
(406)
161⁄2
(419)
Static Pressure Pa
Static Pressure Pa
160
140
120
100
0.7
0.6
0.5
0.4
80
0.3
60
0.2
Static Pressure in. wg
40
0.1
20
0.0
0
0 100 200 300 400 500 600
0 200 400 600 800 1000
0.9
220
200
0.8
180
0.7
160
0.6
140
0.5
120
100
0.4
80
0.3
60
Static Pressure in. wg
0.2
40
0.1
20
0.0
0
0 200 400 600 800 1000 1200
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Size 80 and 85
LD/LDP-80
LD/LDP-85
cfm
m3/hr
Size 90 and 95
LD/LDP-95
LD/LDP-90
cfm
3
m
/hr
RPM
Density 0.075 lb/ft
RPM
Density 0.075 lb/ft
3
3
Model
Number
LD/LDP-80 1/20 1550* 115 W
LD/LDP-85 1/20 1500* 120 W
LD/LDP-90 1/15 1550* 92 W
LD/LDP-95 1/8 1550* 160 W
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
Motor HPFan
RPM
Watts
0 0.1 0.125 0.2 0.25 0.3 0.375 0.5 0.6 0.625
CFM 481 426 413 372 342 310 258 165
Sones 8.8 8.2 8.0 7.8 7.6 7.4 7.2 7.5
CFM 576 507 490 440 403 360 291 182
Sones 8.6 8.1 8.0 7.7 7.3 7.1 7.0 7.8
CFM 819 735 714 654 608 562 485 361
Sones 8.8 8.6 8.5 8.4 8.3 8.1 7.8 7.9
CFM 1052 965 942 870 825 780 695 552 430 396
Sones 11.8 11.2 11.1 10.8 10.4 10.2 10.0 9.8 10.1 10.2
CFM / Static Pressure in Inches wg
11
Page 12
LD/LDP 100-120
Direct Drive
LD Dimensions
13⁄4
(44)
30
(762)
22
(559)
131⁄2
(343)
22
(559)
27
(686)
(102)
LDP Dimensions
28
(711)
22
(559)
Aluminum
82 (37)
(44)
28
(711)
22
(559)
14
(356)
LD 100 thru LD 120 LDP 100 thru LDP 120
Hood Thickness 24 ga Cover Thickness - 0.064 (0.029)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 12 (305) 12 (305)
Roof Opening Square 141⁄2 (368) 141⁄2 (368)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LDP dimensions.
Galvanized
(26)
57
1.1
250
1.0
0.9
200
0.8
18
(457)
4
Static Pressure Pa
181⁄2
0.7
150
0.6
0.5
100
0.4
0.3
Static Pressure in. wg
50
0.2
0.1
0
0.0
0 200 400 600 800 1000 1200 1400 1600
0 500 1000 1500 2000 2500
1.2
T
T
C
E
L
E
S
T
O
N
O
D
(470)
250
1.0
200
0.8
150
0.6
100
Static Pressure Pa
0.4
Static Pressure in. wg
50
0.2
0
0.0
0 200 400 600 800 1000 1200 1400 1600 1800 2000
0 500 1000 1500 2000 2500 3000
T
T
C
E
L
E
S
T
O
N
O
D
Size 100
E
V
R
U
C
M
E
T
S
Y
S
S
I
H
T
F
O
T
F
E
L
E
H
T
O
860
1140
cfm
m
3
/hr
RPM
Density 0.075 lb/ft
1725
3
Size 120
E
V
R
U
C
M
E
T
S
Y
S
S
I
H
T
F
O
T
F
E
L
E
H
T
O
1140
860
cfm
3
/hr
m
RPM
Density 0.075 lb/ft
1725
3
Model
Number
Motor HPFan
RPM
0 0.125 0.2 0.25 0.375 0.5 0.625 0.75 0.875 0.9
CFM / Static Pressure in Inches wg
CFM 766 568 407
LD/LDP-100-C 1/8 860
BHP 0.022 0.029 0.028
Sones 6.3 5.3 5.1
CFM 1016 879 780 709 493
LD/LDP-100-B 1/6 1140
BHP 0.051 0.065 0.068 0.068 0.066
Sones 12.0 11.0 10.6 10.4 10.4
CFM 1538 1457 1399 1360 1256 1142 1024 891 724 678
LD/LDP-100-A 1/4 1725
BHP 0.18 0.21 0.22 0.22 0.23 0.24 0.24 0.23 0.23 0.22
Sones 16.2 14.8 14.4 14.2 14.3 14.2 14.8 15.3 15.9 16.1
CFM 921 702 536
LD/LDP-120-C 1/8 860
BHP 0.03 0.041 0.043
Sones 6.6 5.3 5.1
CFM 1221 1072 960 886 664
LD/LDP-120-B 1/6 1140
BHP 0.071 0.086 0.094 0.096 0.099
Sones 11.9 10.9 10.3 10.0 9.2
CFM 1848 1762 1693 1652 1540 1412 1286 1142 979 940
LD/LDP-120-A 1/4 1725
BHP 0.25 0.28 0.29 0.29 0.31 0.33 0.34 0.35 0.34 0.33
Sones 21 19.6 19.4 19.3 18.6 18.4 18.2 18.2 18.3 18.3
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
12
Page 13
LB/LBP 10
Belt Drive
13⁄4
(44)
13⁄4
(44)
28
(711)
22
(559)
28
(711)
22
(559)
LB Dimensions
171⁄4
(438)
39
(991)
22
(559)
LBP Dimensions
14
(356)
381⁄2
(978)
(559)
22
31⁄4
(85)
17
(432)
Static Pressure Pa
300
250
200
150
100
1.4
1.2
1.0
0.8
0.6
0.4
Static Pressure in. wg
50
0.2
0
0.0
0 200 400 600 800 1000 1200 1400 1600
0 500 1000 1500 2000 2500
E
S
T
O
N
O
D
1/4 hp
T
C
E
L
600
1/3 hp
E
V
R
U
C
M
E
T
S
Y
S
S
I
H
T
F
O
T
F
E
L
E
H
T
O
T
833
cfm
m
1067
3
/hr
1300
LB-10 LBP-10
Hood Thickness 22 ga -
17
Cover Thickness - 0.064 (0.029)
(432)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 12 (305) 12 (305)
Roof Opening Square 141⁄2 (368) 141⁄2 (368)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(25)
56
RPM
HP
Density 0.075 lb/ft
1767
1534
Aluminum
99 (45)
3
Model
Number
Motor HPFan
RPM
600
712
0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.125
CFM 539 351
BHP 0.013 0.014
Sones 3.0 1.6
CFM 639 500
BHP 0.021 0.024
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/2476)
MAXIMUM FRPM = 1767
TIP SPEED = rpm x 2.913
MAX. MOTOR FRAME SIZE = 56
3
Sones 3.6 2.3
CFM 841 746 623
937
BHP 0.048 0.053 0.054
Sones 5.1 4.3 3.6
CFM 942 855 759 625
1049
BHP 0.067 0.073 0.076 0.075
Sones 5.9 5.3 4.7 4.2
CFM 1043 963 887 780 618
LB/LBP-10-4 1/4
1162
BHP 0.091 0.097 0.103 0.103 0.099
Sones 6.9 6.3 5.9 5.4 4.7
CFM 1144 1070 1004 917 818
1274
BHP 0.12 0.13 0.13 0.14 0.14
Sones 8.0 7.5 7.1 6.8 6.3
CFM 1244 1177 1114 1047 953 861
1386
BHP 0.15 0.16 0.17 0.18 0.18 0.17
Sones 9.2 8.8 8.4 8.2 7.9 7.3
CFM 1346 1283 1224 1168 1093 1006 910
1499
BHP 0.19 0.2 0.21 0.22 0.22 0.22 0.22
Sones 10.0 9.8 9.5 9.3 8.8 8.3 7.8
CFM 1446 1388 1331 1280 1220 1142 1064 970
1611
BHP 0.24 0.25 0.26 0.27 0.28 0.28 0.28 0.27
Sones 11.2 10.9 10.7 10.4 10.1 9.5 9.0 8.5
CFM 1516 1461 1406 1356 1304 1237 1158 1087 980
1689
LB/LBP-10-3 1/3
1767
BHP 0.28 0.29 0.3 0.31 0.32 0.32 0.32 0.32 0.31
Sones 12.2 11.9 11.6 11.3 11.0 10.6 9.9 9.5 8.9
CFM 1587 1533 1480 1432 1385 1327 1254 1182 1112 997
BHP 0.32 0.33 0.34 0.35 0.36 0.36 0.36 0.36 0.36 0.36
Sones 13.5 13.0 12.6 12.2 11.9 11.7 11.0 10.5 10.1 9.5
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
13
Page 14
LB/LBP 14
Belt Drive
13⁄4
(44)
13⁄4
(44)
35
(889)
26
(660)
32
(813)
26
(660)
LB Dimensions
171⁄2
(445)
39
(991)
(660)
LBP Dimensions
16
(406)
(1016)
(660)
26
4
(102)
18
(457)
1.2
250
1.0
200
0.8
150
0.6
100
Static Pressure Pa
17
Hood Thickness 22 ga -
(432)
Cover Thickness - 0.064 (0.029)
0.4
Static Pressure in. wg
50
0.2
0.0
0
0 300 600 900 1200 1500 1800 2100 2400 2700
0 1000 2000 3000 4000
1/3 hp
1/4 hp
T
O
T
T
C
E
L
E
S
T
O
480
N
O
D
E
V
1/2 hp
R
U
C
M
E
T
S
Y
S
S
I
H
T
F
O
T
F
E
L
E
H
652
825
1170
997
cfm
3
/hr
m
LB-14 LBP-14
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 16 (406) 16 (406)
Roof Opening Square 181⁄2 (470) 181⁄2 (470)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(37)
81
RPM
HP
Density 0.075 lb/ft
1343
Aluminum
116 (53)
3
Model
Number
Motor HPFan
RPM
0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.125
CFM / Static Pressure in Inches wg
CFM 903 614
480
564
BHP 0.022 0.025
Sones 4.1 3.2
CFM 1061 848
BHP 0.035 0.041
MAX. BHP AT A GIVEN RPM - (rpm/1639)
MAXIMUM FRPM = 1343
TIP SPEED = rpm x 3.829
MAX. MOTOR FRAME SIZE = 56
Sones 4.7 4.2
CFM 1375 1231 1024
731
BHP 0.077 0.086 0.089
Sones 5.9 5.6 5.1
CFM 1533 1402 1241 1013
LB/LBP-14-4 1/4
815
BHP 0.11 0.12 0.12 0.12
Sones 6.7 6.4 5.9 5.4
CFM 1690 1574 1439 1264 946
899
BHP 0.14 0.15 0.16 0.17 0.15
Sones 7.5 7.3 6.9 6.4 5.7
CFM 1847 1743 1629 1482 1297
982
BHP 0.19 0.2 0.21 0.21 0.21
Sones 8.5 8.4 8 7.5 7
CFM 2004 1912 1807 1681 1534 1351
1066
BHP 0.24 0.25 0.26 0.27 0.28 0.27
Sones 9.8 9.7 9.4 8.9 8.4 7.8
CFM 2102 2016 1913 1801 1672 1512 1257
1118
LB/LBP-14-3 1/3
1170
BHP 0.27 0.28 0.3 0.31 0.32 0.32 0.3
Sones 10.7 10.6 10.3 9.8 9.3 8.7 8.1
CFM 2200 2120 2019 1920 1797 1657 1487
BHP 0.31 0.32 0.34 0.36 0.36 0.36 0.36
Sones 11.5 11.3 11.1 10.6 10.1 9.5 9.0
CFM 2364 2290 2197 2112 2002 1887 1748 1585
1257
LB/LBP-14-5 1/2
1343
BHP 0.39 0.4 0.42 0.44 0.44 0.45 0.45 0.44
Sones 12.9 12.7 12.5 12.1 11.6 11.1 10.5 10.1
CFM 2525 2456 2372 2289 2199 2092 1979 1848 1692 1386
BHP 0.47 0.49 0.51 0.53 0.54 0.55 0.55 0.55 0.54 0.51
Sones 14.4 14.1 13.8 13.5 13.1 12.6 12.2 11.6 11.1 10.4
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
14
3
Page 15
LB/LBP 18
Belt Drive
13⁄4
(44)
13⁄4
(44)
40
(1016)
30
(762)
36
(914)
(762)
LB Dimensions
171⁄2
(445)
39
(991)
30
(762)
LBP Dimensions
(483)
(1168)
30
(762)
46
41⁄2
(114)
21
(533)
2.5
Static Pressure Pa
600
400
200
2.0
1/3 hp
1.5
1/4 hp
1.0
Static Pressure in. wg
0.5
0
D
0.0
0 1000 2000 3000 4000 5000 6000
0 2 4 6 8 10
1 hp
3/4 hp
1/2 hp
F
O
T
F
E
L
E
H
T
O
T
T
C
E
L
E
S
T
O
465
N
O
H
T
664
2 hp
E
V
R
U
1 1/2 hp
C
M
E
T
S
Y
S
S
I
1261
1062
863
cfm
3
/hr X 1000
m
LB-18 LBP-18
Hood Thickness 22 ga -
241⁄2
Cover Thickness - 0.064 (0.029)
(622)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 18 (457) 18 (457)
Roof Opening Square 201⁄2 (521) 201⁄2 (521)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(61)
135
RPM
HP
Density 0.075 lb/ft
1460
Aluminum
179 (81)
3
Model
Motor HPFan
Number
LB/LBP-18-4 1/4
RPM
465
562
0 0.125 0.25 0.5 0.75 1 1.25 1.5 1.75 2
CFM 1753 1422
BHP 0.056 0.064
Sones 3.6 2.7
CFM 2119 1871 1522
BHP 0.099 0.108 0.114
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/1157)
MAXIMUM FRPM = 1460
TIP SPEED = rpm x 4.843
MAX. MOTOR FRAME SIZE = 145T
3
Sones 4.9 4.1 3.4
CFM 2847 2671 2474 1925
755
BHP 0.24 0.25 0.27 0.27
Sones 8.7 7.9 7.4 6.5
CFM 3115 2957 2778 2324
LB/LBP-18-3 1/3 826
BHP 0.31 0.33 0.34 0.36
Sones 10.2 9.5 8.9 8.0
CFM 3348 3203 3039 2638 2110
888
LB/LBP-18-5 1/2
949
BHP 0.39 0.4 0.42 0.45 0.44
Sones 11.7 11.0 10.4 9.4 8.7
CFM 3578 3442 3292 2936 2498
BHP 0.48 0.49 0.51 0.54 0.55
Sones 13.4 13.0 12.0 11.0 10.3
CFM 4091 3972 3847 3575 3218 2822
LB/LBP-18-7 3/4 1085
BHP 0.71 0.73 0.75 0.79 0.82 0.82
Sones 16.8 16.2 15.5 14.6 13.4 12.9
CFM 4302 4189 4073 3814 3493 3140 2674
LB/LBP-18-10 1 1141
BHP 0.83 0.84 0.86 0.91 0.94 0.96 0.93
Sones 18.0 17.3 16.7 15.9 14.8 14.1 13.8
CFM 4849 4749 4648 4423 4183 3880 3568 3208
LB/LBP-18-15 1
1286
1
⁄2
1375
BHP 1.19 1.2 1.22 1.27 1.32 1.35 1.37 1.35
Sones 21 20 19.8 19.2 18.5 17.8 17.4 17.1
CFM 5185 5091 4997 4790 4576 4311 4025 3719 3382
BHP 1.45 1.47 1.49 1.54 1.59 1.63 1.66 1.67 1.65
Sones 24 23 22 21 21 20 19.9 19.6 19.5
CFM 5505 5417 5328 5138 4936 4714 4446 4176 3874 3538
LB/LBP-18-20 2 1460
BHP 1.73 1.76 1.78 1.83 1.88 1.93 1.98 2 2 1.97
Sones 26 25 24 23 23 22 22 22 22 22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
15
Page 16
LB/LBP 21
Belt Drive
13⁄4
(44)
13⁄4
(44)
43
(1092)
30
(762)
36
(914)
30
(762)
LB Dimensions
23
(584)
51
(1295)
30
(762)
LBP Dimensions
19
(483)
46
(1168)
(762)
30
6
(152)
23
(584)
Static Pressure Pa
400
300
200
100
2.0
1.5
1/3 hp
1/4 hp
1.0
Static Pressure in. wg
0.5
D
0.0
0
0 1000 2000 3000 4000 5000 6000 7000 8000
0 2 4 6 8 10 12
1/2 hp
O
N
O
T
3/4 hp
E
L
E
S
1 hp
T
C
O
T
1 1/2 hp
F
E
L
E
H
T
465
E
2 hp
V
R
U
C
M
E
T
S
Y
S
S
I
H
T
F
O
T
612
759
3
/hr X 1000
m
1053
906
cfm
LB-21 LBP-21
Hood Thickness 22 ga -
241⁄2
Cover Thickness - 0.064 (0.029)
(622)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 18 (457) 18 (457)
Roof Opening Square 201⁄2 (521) 201⁄2 (521)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(66)
145
RPM
HP
Density 0.075 lb/ft
1200
Aluminum
191 (86)
3
Model
Number
Motor HPFan
RPM
0 0.25 0.375 0.5 0.625 0.75 1 1.25 1.5 1.75
CFM / Static Pressure in Inches wg
CFM 2820 1732
465
LB/LBP-21-4 1/4
595
BHP 0.12 0.13
Sones 6.6 5.2
CFM 3609 2938 2457
BHP 0.24 0.28 0.28
MAX. BHP AT A GIVEN RPM - (rpm/910)
MAXIMUM FRPM = 1200
TIP SPEED = rpm x 5.596
MAX. MOTOR FRAME SIZE = 145T
Sones 8.8 7.8 6.9
CFM 3948 3371 2970 2354
LB/LBP-21-3 1/3 651
BHP 0.32 0.36 0.36 0.34
Sones 10.1 8.8 8.2 6.9
CFM 4239 3724 3362 2954 1964
699
LB/LBP-21-5 1/2
747
BHP 0.39 0.44 0.45 0.45 0.38
Sones 11.6 9.9 9.3 8.6 7.1
CFM 4531 4056 3741 3390 2909
BHP 0.48 0.53 0.54 0.55 0.53
Sones 13.4 11.2 10.4 9.8 9.1
CFM 4858 4424 4157 3833 3491 2937
801
LB/LBP-21-7 3/4
855
BHP 0.59 0.65 0.66 0.67 0.68 0.64
Sones 15.5 12.9 11.8 11.3 10.8 10.1
CFM 5186 4790 4553 4261 3954 3608
BHP 0.72 0.79 0.8 0.81 0.82 0.82
Sones 16.7 14.4 13.3 12.8 12.1 11.5
CFM 5452 5087 4858 4602 4313 4019 2894
LB/LBP-21-10 1 899
BHP 0.83 0.91 0.93 0.94 0.95 0.96 0.86
Sones 17.1 15.4 14.5 13.9 13.4 12.7 11.7
CFM 6126 5826 5614 5415 5183 4926 4386 3369
LB/LBP-21-15 1
1010
1
⁄2
1077
BHP 1.18 1.26 1.3 1.32 1.34 1.35 1.36 1.24
Sones 20 18.9 18.1 17.3 16.6 16.2 15.0 14.0
CFM 6532 6260 6068 5877 5691 5451 4965 4395
BHP 1.43 1.52 1.56 1.59 1.61 1.62 1.65 1.63
Sones 22 21 20 19.4 18.8 18.2 17.3 16.4
CFM 7278 7034 6890 6712 6542 6375 5954 5517 5013 4122
LB/LBP-21-20 2 1200
BHP 1.98 2.07 2.12 2.18 2.2 2.22 2.25 2.28 2.26 2.11
Sones 26 25 25 24 23 23 22 21 20 18.5
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
16
3
Page 17
LB/LBP 24
Belt Drive
13⁄4
(44)
13⁄4
(44)
451⁄2
(1156)
(864)
40
(1016)
34
(864)
LB Dimensions
201⁄2
(521)
51
(1295)
34
(864)
LBP Dimensions
20
(508)
491⁄2
(1257)
34
(864)
63⁄4
(171)
231⁄2
(597)
Static Pressure Pa
1.6
350
1.4
300
1.2
250
1.0
200
0.8
150
0.6
Static Pressure in. wg
100
0.4
50
0.2
0
0.0
0 1000 2000 3000 4000 5000 6000 7000 8000 9000
0 2 4 6 8 10 12 14
1/4 hp
D
1/2 hp
1/3 hp
O
N
O
1 hp
3/4 hp
F
E
L
E
H
T
O
T
T
C
E
L
E
S
T
355
1 1/2 hp
S
I
H
T
F
O
T
466
3
m
E
V
R
U
C
M
E
T
S
Y
S
688
577
cfm
/hr X 1000
2 hp
LB-24 LBP-24
Hood Thickness 22 ga -
231⁄2
Cover Thickness - 0.064 (0.029)
(597)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 24 (610) 24 (610)
Roof Opening Square 261⁄2 (673) 261⁄2 (673)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(85)
188
RPM
HP
Density 0.075 lb/ft
910
799
Aluminum
239 (108)
3
Model
Motor HPFan
Number
LB/LBP-24-4 1/4
RPM
355
409
0 0.25 0.375 0.5 0.625 0.75 0.875 1 1.25 1.375
CFM 3419
BHP 0.11
Sones 5.8
CFM 3938 2715
BHP 0.17 0.19
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/710)
MAXIMUM FRPM = 910
TIP SPEED = rpm x 6.414
MAX. MOTOR FRAME SIZE = 145T
3
Sones 6.3 5.1
CFM 4449 3451 2491
462
BHP 0.24 0.28 0.25
Sones 7.4 6.3 5.3
CFM 4892 4043 3433
LB/LBP-24-3 1/3 508
BHP 0.32 0.36 0.36
Sones 8.5 7.4 6.8
CFM 5604 4917 4441 3899
LB/LBP-24-5 1/2 582
BHP 0.48 0.54 0.55 0.55
Sones 10.7 9.4 8.9 8.4
CFM 6018 5381 4988 4497 3929
625
LB/LBP-24-7 3/4
667
BHP 0.59 0.66 0.68 0.68 0.66
Sones 12.4 11.0 10.3 10.0 9.5
CFM 6423 5828 5505 5062 4589 3984
BHP 0.72 0.8 0.82 0.83 0.83 0.79
Sones 14.1 12.7 12.0 11.5 11.1 10.9
CFM 7068 6531 6252 5912 5503 5073 4555
LB/LBP-24-10 1 734
BHP 0.96 1.05 1.08 1.1 1.1 1.1 1.07
Sones 17.0 15.3 14.6 13.9 13.5 13.2 12.9
LB/LBP-24-15 1
1
⁄2 787
CFM 7578 7080 6820 6560 6190 5799 5398 4909
BHP 1.18 1.29 1.32 1.35 1.36 1.36 1.36 1.32
Sones 19.6 17.4 16.5 15.9 15.4 15.0 14.8 14.1
CFM 8358 7907 7675 7440 7192 6855 6505 6141 5285
868
LB/LBP-24-20 2
910
BHP 1.58 1.7 1.74 1.78 1.81 1.82 1.83 1.82 1.76
Sones 24 21 20 19.4 18.9 18.3 17.9 17.6 16.0
CFM 8763 8333 8114 7889 7664 7377 7056 6713 5995 5537
BHP 1.82 1.95 2 2.04 2.07 2.09 2.1 2.1 2.08 2.03
Sones 27 24 23 21 21 20 19.8 19.5 18.4 17.2
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
17
Page 18
LB/LBP 30
Belt Drive
13⁄4
(44)
13⁄4
(44)
50
(1270)
40
(1016)
46
(1168)
40
(1016)
LB Dimensions
291⁄2
(749)
63
(1600)
(1016)
LBP Dimensions
23
(584)
(1473)
(1016)
40
58
81⁄2
(216)
265⁄8
(676)
Static Pressure Pa
400
300
200
100
2.0
3 hp
1/2 hp
1/3 hp
N
O
D
1 hp
3/4 hp
S
T
O
230
2 hp
1 1/2 hp
T
T
C
E
L
E
O
351
H
T
F
O
T
F
E
L
E
H
T
472
1.5
1.0
Static Pressure in. wg
0.5
0.0
0
0 2 4 6 8 10 12 14 16
0 5 10 15 20 25
E
V
R
U
C
M
E
T
S
Y
S
S
I
593
cfm X 1000
3
m
/hr X 1000
5 hp
714
LB-30 LBP-30
Hood Thickness 22 ga -
261⁄2
Cover Thickness - 0.064 (0.029)
(673)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 30 (762) 30 (762)
Roof Opening Square 321⁄2 (826) 321⁄2 (826)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(113)
249
RPM
HP
Density 0.075 lb/ft
835
Aluminum
318 (144)
3
Model
Number
Motor HPFan
RPM
0 0.25 0.375 0.5 0.625 0.75 1 1.25 1.5 1.75
CFM / Static Pressure in Inches wg
CFM 3910
230
LB/LBP-30-3 1/3
366
BHP 0.076
Sones 8.0
CFM 6221 4729
BHP 0.31 0.37
MAX. BHP AT A GIVEN RPM - (rpm/512)
MAXIMUM FRPM = 835
TIP SPEED = rpm x 7.985
MAX. MOTOR FRAME SIZE = 184T
Sones 8.7 5.9
CFM 6697 5354 4290
394
LB/LBP-30-5 1/2
421
BHP 0.38 0.45 0.44
Sones 9.0 6.5 6.0
CFM 7156 5939 5076
BHP 0.47 0.54 0.55
Sones 9.7 7.4 6.7
CFM 8210 7196 6567 5777
LB/LBP-30-7 3/4 483
BHP 0.7 0.8 0.83 0.83
Sones 12.0 10.7 9.7 8.8
CFM 8992 8079 7559 6946 6162
LB/LBP-30-10 1 529
BHP 0.92 1.04 1.07 1.1 1.09
Sones 13.8 12.9 12.1 11.4 10.3
CFM 9638 8797 8334 7786 7174 6410
LB/LBP-30-15 1
567
1
⁄2
605
BHP 1.14 1.27 1.31 1.34 1.36 1.33
Sones 15.3 14.2 13.6 13.0 12.3 11.2
CFM 10284 9507 9073 8605 8068 7434
BHP 1.38 1.53 1.57 1.61 1.64 1.64
Sones 16.8 15.7 15.2 14.6 14.1 13.3
CFM 11338 10639 10257 9863 9419 8933 7737
LB/LBP-30-20 2 667
BHP 1.85 2.02 2.07 2.12 2.16 2.19 2.17
Sones 19.8 18.6 17.9 17.5 17.1 16.6 14.9
CFM 11950 11287 10935 10562 10184 9722 8701 7032
LB/LBP-30-30 3 703
BHP 2.17 2.34 2.41 2.46 2.51 2.54 2.57 2.41
Sones 22 20 19.5 19.1 18.7 18.3 17.0 14.2
CFM 14194 13635 13356 13062 12747 12432 11728 10951 9965 8478
LB/LBP-30-50 5 835
BHP 3.63 3.84 3.95 4.03 4.09 4.14 4.24 4.33 4.29 4.06
Sones 27 26 25 25 24 24 23 22 21 18.2
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
18
3
Page 19
LB/LBP 36
Belt Drive
13⁄4
(44)
13⁄4
(44)
60
(1524)
46
(1168)
513⁄4
(1314)
46
(1168)
LB Dimensions
27
(686)
(1600)
46
(1168)
LBP Dimensions
(660)
(1168)
63
(1600)
46
93⁄4
(248)
325⁄8
(829)
Static Pressure Pa
400
300
200
100
2.0
1/2 hp
1 hp
3/4 hp
O
D
2 hp
1 1/2 hp
S
T
O
N
L
E
220
1.5
1.0
Static Pressure in. wg
0.5
0.0
0
0 2 4 6 8 10 12 14 16 18 20
0 10 20 30
5 hp
E
V
F
O
T
F
E
L
E
403
cfm X 1000
m
U
C
M
E
T
S
SY
IS
H
T
494
3
/hr X 1000
R
3 hp
H
T
O
T
T
C
E
311
LB-36 LBP-36
Hood Thickness 0.064 (0.029) -
343⁄8
Cover Thickness - 0.064 (0.029)
(873)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 36 (914) 36 (914)
Roof Opening Square 381⁄2 (978) 381⁄2 (978)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(153)
338
RPM
HP
Density 0.075 lb/ft
678
586
Aluminum 444
(201)
3
Model
Motor HPFan
Number
LB/LBP-36-5 1/2
RPM
220
315
0 0.25 0.375 0.5 0.625 0.75 0.875 1 1.25 1.5
CFM 6204
BHP 0.16
Sones 4.9
CFM 8884 6937
BHP 0.47 0.55
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/384)
MAXIMUM FRPM = 678
TIP SPEED = rpm x 9.425
MAX. MOTOR FRAME SIZE = 184T
3
Sones 8.2 6.3
CFM 10153 8570 7487
LB/LBP-36-7 3/4 360
BHP 0.7 0.81 0.83
Sones 10.6 8.9 7.9
CFM 11196 9816 8911 7775
LB/LBP-36-10 1 397
BHP 0.94 1.08 1.1 1.1
Sones 13.7 12.1 10.6 9.4
CFM 12014 10765 9964 9056 7716
LB/LBP-36-15 1
426
1
⁄2
454
BHP 1.16 1.32 1.35 1.37 1.34
Sones 14.8 14.0 12.7 11.6 10.1
CFM 12804 11668 10949 10127 9209 7552
BHP 1.41 1.58 1.63 1.65 1.66 1.57
Sones 16.0 15.4 14.5 13.7 12.5 11.0
CFM 14073 13064 12442 11760 11004 10173 8773
LB/LBP-36-20 2 499
BHP 1.87 2.06 2.13 2.17 2.2 2.2 2.12
Sones 18.2 17.6 17.2 16.6 16.1 15.1 13.9
CFM 15116 14196 13646 13037 12361 11652 10837 9559
536
LB/LBP-36-30 3
572
BHP 2.31 2.52 2.61 2.67 2.7 2.73 2.72 2.65
Sones 20 19.7 19.3 18.7 18.4 17.8 16.7 15.8
CFM 16132 15287 14790 14229 13649 12989 12313 11534
BHP 2.81 3.04 3.14 3.21 3.26 3.29 3.32 3.31
Sones 22 22 21 21 20 19.9 19.0 18.1
CFM 17316 16540 16087 15598 15066 14504 13890 13262 11584
614
LB/LBP-36-50 5
678
BHP 3.48 3.72 3.84 3.93 3.99 4.05 4.08 4.1 4.04
Sones 25 24 24 24 23 23 22 21 19.2
CFM 19121 18419 18041 17621 17165 16683 16192 15636 14494 12970
BHP 4.69 4.95 5.08 5.21 5.3 5.37 5.44 5.47 5.52 5.45
Sones 30 29 29 29 28 27 27 26 24 22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
19
Page 20
LB/LBP 42
Belt Drive
13⁄4
(44)
13⁄4
(44)
705⁄8
(1794)
52
(1321)
58
(1473)
52
(1321)
LB Dimensions
331⁄2
(851)
75
(1905)
52
(1321)
LBP Dimensions
701⁄2
(1791)
29
(737)
(1321)
52
111⁄2
(292)
373⁄8
(949)
Static Pressure Pa
300
200
100
1.6
1.4
1.2
1.0
0.8
0.6
Static Pressure in. wg
0.4
0.2
0.0
0
2 hp
1 1/2 hp
1 hp
3/4 hp
1/2 hp
C
E
L
E
S
T
O
N
190
O
D
0 2 4 6 8 10 12 14 16 18 20 22 24
0 10 20 30 40
3 hp
T
T
E
H
T
O
H
T
F
O
T
F
E
L
320
255
cfm X 1000
3
/hr X 1000
m
S
I
5 hp
S
Y
S
E
V
R
U
C
M
E
T
385
LB-42 LBP-42
Hood Thickness 0.064 (0.029) -
381⁄4
Cover Thickness - 0.064 (0.029)
(972)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 42 (1067) 42 (1067)
Roof Opening Square 441⁄2 (1130) 441⁄2 (1130)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(180)
396
RPM
HP
Density 0.075 lb/ft
515
450
Aluminum
530 (240)
3
Model
Number
Motor HPFan
RPM
0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.25
CFM / Static Pressure in Inches wg
CFM 8328 6455
MAX. BHP AT A GIVEN RPM - (rpm/301)
MAXIMUM FRPM = 515
TIP SPEED = rpm x 11.061
MAX. MOTOR FRAME SIZE = 184T
LB/LBP-42-5 1/2
190
BHP 0.21 0.25
Sones 5.2 4.3
CFM 10827 9583 7772
247
BHP 0.47 0.53 0.55
Sones 6.9 6.0 5.5
CFM 12405 11362 9965 7932
LB/LBP-42-7 3/4 283
BHP 0.71 0.78 0.83 0.81
Sones 8.3 7.6 7.1 6.5
CFM 13632 12718 11521 10057
LB/LBP-42-10 1 311
BHP 0.94 1.02 1.08 1.1
Sones 9.8 9.3 8.7 8.3
CFM 14640 13812 12766 11480 9795
LB/LBP-42-15 1
334
1
⁄2
356
BHP 1.17 1.25 1.33 1.37 1.35
Sones 11.5 11.0 10.4 9.8 9.2
CFM 15605 14828 13887 12733 11417 9401
BHP 1.41 1.5 1.58 1.64 1.66 1.59
Sones 13.2 12.7 12.1 11.5 10.8 10.3
CFM 17183 16477 15667 14715 13626 12382 10481
LB/LBP-42-20 2 392
BHP 1.89 1.98 2.08 2.16 2.21 2.21 2.13
Sones 16.1 15.5 14.9 14.3 13.7 13.2 12.9
CFM 18410 17751 17030 16205 15201 14135 12945 11013
420
LB/LBP-42-30 3
448
BHP 2.32 2.42 2.52 2.62 2.68 2.72 2.72 2.61
Sones 18.6 18.0 17.3 16.6 16.1 15.4 15.3 15.2
CFM 19637 19020 18378 17605 16740 15786 14735 13494
BHP 2.82 2.93 3.04 3.14 3.22 3.28 3.3 3.28
Sones 22 21 20 19.4 18.8 18.1 17.5 17.6
CFM 21128 20554 19980 19281 18562 17683 16796 15798 14692
482
LB/LBP-42-50 5
515
BHP 3.51 3.63 3.74 3.86 3.97 4.04 4.1 4.11 4.09
Sones 23 23 22 22 21 20 19.3 18.7 18.5
CFM 22574 22037 21500 20887 20214 19480 18651 17822 16871 14331
BHP 4.28 4.41 4.53 4.65 4.77 4.87 4.94 5.01 5.01 4.88
Sones 25 24 24 24 23 22 21 21 20 19.3
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
20
3
Page 21
LB/LBP 48
Belt Drive
13⁄4
(44)
13⁄4
(44)
(1788)
58
(1473)
64
(1626)
(1473)
LB Dimensions
41
(1041)
87
(2210)
58
(1473)
LBP Dimensions
761⁄2
32
(813)
(1943)
(1473)
58
115⁄8
(295)
411⁄2
(1054)
Static Pressure Pa
300
250
200
150
100
1.4
1.2
1.0
0.8
0.6
0.4
Static Pressure in. wg
50
0.2
0
0.0
0 4 8 12 16 20 24 28
0 10 20 30 40
3/4 hp
1/2 hp
O
D
1 1/2 hp
1 hp
S
OT
N
2 hp
H
T
O
T
T
C
E
L
E
150
3 hp
E
L
E
F
T
204
S
I
H
T
F
O
m
E
5 hp
V
R
U
C
M
E
T
S
Y
S
312
258
cfm X 1000
3
/hr X 1000
LB-48 LBP-48
Hood Thickness 0.064 (0.029) -
403⁄8
Cover Thickness - 0.064 (0.029)
(1026)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 48 (1219) 48 (1219)
Roof Opening Square 501⁄2 (1283) 501⁄2 (1283)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(195)
430
RPM
HP
Density 0.075 lb/ft
420
366
Aluminum
579 (263)
3
Model
Motor HPFan
Number
LB/LBP-48-5 1/2
RPM
150
175
CFM 9666 6546
0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 0.9 1
BHP 0.21 0.24
Sones 6.1 5.4
CFM 11277 8948
BHP 0.34 0.38
CFM / Static Pressure in Inches wg
MAX. BHP AT A GIVEN RPM - (rpm/241)
MAXIMUM FRPM = 420
TIP SPEED = rpm x 12.632
MAX. MOTOR FRAME SIZE = 213T
3
Sones 6.9 5.6
CFM 12824 10846 7629
199
BHP 0.5 0.56 0.54
Sones 7.6 6.8 7.0
CFM 14563 12863 10741
LB/LBP-48-7 3/4 226
BHP 0.73 0.81 0.83
Sones 8.5 8.2 7.5
CFM 16046 14530 12787 10092
LB/LBP-48-10 1 249
BHP 0.98 1.07 1.1 1.08
Sones 9.5 9.4 9.2 8.3
CFM 17205 15823 14222 12151
LB/LBP-48-15 1
267
1
⁄2
285
BHP 1.2 1.31 1.35 1.36
Sones 10.6 10.4 10.2 9.2
CFM 18365 17103 15612 13896 11357
BHP 1.46 1.58 1.63 1.66 1.61
Sones 12.3 11.7 11.1 10.5 9.6
CFM 20234 19141 17779 16397 14665 11934
LB/LBP-48-20 2 314
BHP 1.96 2.1 2.17 2.2 2.22 2.1
Sones 15.4 14.5 13.4 12.5 12.2 11.5
CFM 23134 22214 21041 19878 18650 17134 15069 11596
LB/LBP-48-30 3 359
BHP 2.93 3.1 3.21 3.25 3.29 3.31 3.25 2.84
Sones 18.4 17.8 17.2 16.5 15.9 15.5 14.8 13.4
CFM 24552 23685 22620 21512 20378 19104 17564 15491 15076
381
LB/LBP-48-50 5
420
BHP 3.5 3.68 3.81 3.87 3.92 3.95 3.95 3.86 3.85
Sones 20 19.6 19.1 18.6 17.9 17.4 17.1 16.2 16.0
CFM 27065 26278 25383 24354 23363 22317 21159 19839 19534 18029
BHP 4.69 4.89 5.05 5.15 5.21 5.25 5.29 5.31 5.3 5.23
Sones 23 23 23 23 22 22 21 21 21 20
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
21
Page 22
LB/LBP 54
Belt Drive
13⁄4
(44)
13⁄4
(44)
791⁄2
(2019)
64
(1626)
(1778)
64
(1626)
LB Dimensions
38
(965)
87
(2210)
64
(1626)
LBP Dimensions
831⁄2
(2121)
35
(889)
(1626)
121⁄2
(318)
(1153)
435⁄8
(1108)
Static Pressure Pa
300
250
200
150
100
1.4
E
T
F
E
L
E
M
E
T
S
Y
S
S
I
H
T
F
O
239
cfm X 1000
3
m
/hr X 1000
V
R
7 1/2 hp
U
C
293
1.2
1.0
2 hp
0.8
1 hp
0.6
0.4
Static Pressure in. wg
50
0.2
0.0
0
0 5 10 15 20 25 30 35 40
0 10 20 30 40 50 60
3 hp
1 1/2 hp
N
O
D
5 hp
H
T
O
T
T
C
E
L
E
S
184
T
O
130
Density 0.075 lb/ft
401
348
RPM
HP
3
LB-54 LBP-54
Hood Thickness 0.064 (0.029) Cover Thickness - 0.064 (0.029)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 54 (1372) 54 (1372)
Roof Opening Square 561⁄2 (1435) 561⁄2 (1435)
Weight*
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor.
See page 8 for severe duty LBP dimensions.
Galvanized
(270)
596
Aluminum
780 (354)
Model
Number
Motor HPFan
RPM
0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.125
CFM / Static Pressure in Inches wg
CFM 12159
MAX. BHP AT A GIVEN RPM - (rpm/198)
MAXIMUM FRPM = 401
TIP SPEED = rpm x 14.137
MAX. MOTOR FRAME SIZE = 213T
LB/LBP-54-10 1
130
155
BHP 0.25
Sones 4.6
CFM 14497 11186
BHP 0.42 0.48
Sones 5.8 4.9
CFM 19267 17356 13895
206
BHP 0.99 1.1 1.12
Sones 8.7 8.5 8.7
LB/LBP-54-15 1
1
⁄2 235
CFM 21980 20319 17983 14194
BHP 1.47 1.6 1.66 1.6
Sones 11.2 11.2 11.3 11.7
CFM 24131 22628 20831 17904
LB/LBP-54-20 2 258
BHP 1.95 2.09 2.18 2.21
Sones 12.1 12.5 13.0 13.3
CFM 25908 24517 22962 20554 17326
277
LB/LBP-54-30 3
296
BHP 2.41 2.57 2.68 2.72 2.65
Sones 14.1 13.4 14.1 14.4 13.7
CFM 27685 26383 25030 23122 20394 16072
BHP 2.94 3.11 3.25 3.31 3.34 3.1
Sones 17.6 15.5 15.2 16.0 15.1 13.1
CFM 30210 29017 27789 26305 24165 21535 17215
323
LB/LBP-54-50 5
350
BHP 3.82 4.01 4.17 4.27 4.31 4.29 4.01
Sones 19.3 17.8 17.3 18.4 18.3 16.8 14.7
CFM 32736 31634 30514 29312 27766 25487 22974 18944
BHP 4.87 5.06 5.25 5.39 5.46 5.5 5.43 5.13
Sones 18.9 19.5 20 21 22 21 19.0 17.8
CFM 35167 34142 33111 32039 30716 29030 26889 24483 20824
LB/LBP-54-75 7
376
1
⁄2
401
BHP 6.03 6.25 6.45 6.62 6.72 6.79 6.82 6.71 6.4
Sones 22 23 23 24 25 26 24 22 21
CFM 37506 36544 35583 34583 33500 32150 30332 28324 26018 22767
BHP 7.32 7.54 7.77 7.96 8.11 8.19 8.24 8.29 8.13 7.81
Sones 25 26 26 27 28 29 29 27 26 24
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
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Specifications
Direct Drive Specifications
The LD and LDP exhaust fans shall be direct drive type. The fan wheel shall be centrifugal backward
inclined, constructed of aluminum and shall include a wheel cone carefully matched to the fan’s venturi
for precise running tolerances. Wheels shall be statically and dynamically balanced. The fan shall be
constructed of heavy gauge steel or aluminum with a rigid internal support structure and a birdscreen.
Motors shall be mounted on vibration isolators. Motors shall be readily accessible for maintenance.
A disconnect switch shall be factory installed and wired from the fan motor to a junction box within
the motor compartment. A conduit chase shall be provided through the curb cap to the motor
compartment for ease of electrical wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affixed manufacturer’s engraved aluminum nameplate containing the
model number and individual serial number for future identification.
Fans shall be models LD or LDP as manufactured by Greenheck Fan Corporation in Schofield,
Wisconsin, USA.
Belt Drive Specifications
The LB and LBP exhaust fans shall be belt drive type. The fan wheel shall be centrifugal backward
inclined, constructed of aluminum and shall include a wheel cone carefully matched to the fan’s venturi
for precise running tolerances.
Wheels shall be statically and dynamically balanced. The fan shall be constructed of heavy gauge steel
or aluminum with a rigid internal support structure and birdscreen.
Motors shall be heavy duty ball bearing type, carefully matched to the fan load, and furnished at the
specified voltage, phase and enclosure. Drive frame assembly shall be constructed of heavy gauge
steel. Motors and drives shall be mounted on vibration isolators. Motors and drives shall be readily
accessible for maintenance.
Precision ground and polished fan shafts shall be mounted in permanently sealed, lubricated pillow
block ball bearings. Bearings shall be selected for a minimum L10 life in excess of 100,000 hours
(L50 average of 500,000 hours) at maximum cataloged operating speed. Drives shall be sized for a
minimum of 150% of driven horsepower. Pulleys shall be of the cast type, keyed and securely attached
to the wheel and motor shafts.
Motor pulleys shall be adjustable for final system balancing. A disconnect switch shall be factory
installed and wired from the fan motor to a junction box installed within the motor compartment. A
conduit chase shall be provided through the base to the motor compartment for ease of electrical
wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affixed manufacturer’s engraved aluminum nameplate containing
the model number and individual serial number for future identification.
Fans shall be models LB or LBP as manufactured by Greenheck Fan Corporation in Schofield,
Wisconsin, USA.
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Other Centrifugal Exhaust Fans
Models G and GB, direct or belt drive, spun aluminum downblast
centrifugal roof exhaust fans are an economical means of exhausting air.
They utilize a backward inclined wheel and are available in 45 different
sizes. Performance capacities range up to 3.25 in. wg (810 Pa) of static
pressure and from 50 to 44,700 cfm (85 to 75,900 m
Series C models CUE, CUBE, CW and CWB are commonly used for general
clean air, mild grease and fume hood exhaust applications. Both roof
upblast and sidewall configurations are specifically designed to discharge
air directly away from the mounting surface. These models are constructed
of aluminum and use an aluminum backward-inclined wheel. They are
UL/cUL Listed for electrical or grease. Performance capacities ranges
up to 5 in. wg (1242 Pa) and up to 30,000 cfm (51,000 m
Model SWB centrifugal backward inclined belt driven utility fans are designed
for supply, exhaust and return air applications requiring higher discharge
velocities and high static pressures. The SWB Series 100 is for general clean air
applications. The SWB Series 200 fans are constructed with heavy gauge steel.
Designed for light industrial duty and grease applications, it’s capacities range
from 70 to 27,000 cfm (120 to 45,900 m
3
/hr) and up to 5 in. wg (1,118 Pa) of static
pressure. SWB fans can be mounted indoors or outdoors.
3
/hr).
3
/hr).
Models NYD and NYB, direct or belt drive, tamper resistant centrifugal roof
exhaust fans are galvanized construction and prevent entry into the unit
and/or building. They utilize a backward inclined wheel and are available in
10 different sizes. Performance capacities range from 170 to 8,080 cfm
(290 to 13,700 m3/hr) and up to 1 in. wg (249 Pa) of static pressure.
Building Value in Air
Greenheck delivers value
to mechanical engineers by
helping them solve virtually
any air quality challenges
their clients face with a
comprehensive selection of
top quality, innovative airrelated equipment. We offer
extra value to contractors
by providing easy-to-install,
competitively priced, reliable
products that arrive on time.
And building owners and
occupants value the energy
efficiency, low maintenance
and quiet dependable operation
they experience long after the
construction project ends.
Our Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the shipment date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.
Prepared to Support
Green Building Efforts
P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com
Series L Rev 5 May 2009 SN
Copyright © 2009 Greenheck Fan Corp.
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