Greenheck FGI User Manual

Hurricane and High Wind Fans

Models: G, GB, CUE, CUBE, S-CUBE, USGF,
R, RB, FGI, FGR, LBP, LDP, RSF, RSFP
SWB, SFB and SFD

March 2010

Overview

Third-party Certified High Wind and Hurricane Fans

As the first fan manufacturer to certify products to
hurricane standards, Greenheck is committed to offering
the widest selection of hurricane rated ventilation
products in the industry. From fans and laboratory
exhaust systems to louvers and louvered penthouses,
Greenheck's hurricane products are all third-party
certified and designed to out-perform the competition.

Greenheck fans are engineered and constructed to
withstand severe conditions. These durable fans are
easy to mount and install and will provide years of
reliable, worry free service in high wind environments.

At Greenheck, we provide just what you need to meet
the challenges for high winds and hurricanes.

Product Features include:

All standard models are hurricane certifies



Highest industry rating



Fans are certified for static and cyclic wind loading and missile impact



Designed to withstand wind loads of up to 150 mph



No tie downs are needed



Installation/mounting details are provided



Certifications

2

Fan Models

Model G and GB

Centrifugal Roof Exhaust

The Greenheck models G (direct drive) and
GB (belt drive) are centrifugal roof exhaust fans
designed specifically for high wind applications, such
as hurricanes, tornadoes and other high wind areas.
The downblast design is ideal for general clean air
applications where air is discharged directly onto the
roof surface. Models are tested to all three Miami-Dade
test protocols for static loading, missile impact, and
cyclic loading.

Standard Construction

• Drawn shroud with integral rolled bead for consistent
material thickness and strength.

• High strength internal support structure and bracing.

• Motor and drive frame are isolated from the airstream,
mounted on true vibration isolators and sized for
150% of maximum driven horsepower.

• Bearings are pillow block design selected for a
minimum basic L10 life of 100,000 hours (average
L50 life in excess of 500,000 hours) at maximum
cataloged speed.

• NEMA-1 disconnect is mounted and
wired from the factory.

• High wind load roof curb is available for flat
and pitched roofs.

Performance

For full performance listings refer to the
G and GB catalog.

• Air performance is AMCA licensed up to
14,000 cfm

• Pressure range from 0-2.75 in. wg (700 Pa).

• Models G and GB are licensed to bear the AMCA Seal
for Sound and Air.

(24,000 m3/hr).

Model CUE, CUBE, S-CUBE
and USGF

Centrifugal Upblast Exhaust

USGF

CUE

The Greenheck models CUE (direct drive), CUBE,
S-CUBE and USGF (belt drive) are upblast roof exhaust
fans designed specifically for high wind applications
such as hurricanes, tornadoes and other high wind
areas. The upblast design is ideal for restaurant (grease
laden), general clean air, smoke and mild contaminates
(fume hood) where air is discharged away from the
mounting surface. Models are tested to all three Miami­Dade test protocols for static loading, missile impact,
and cyclic loading.

Standard Construction

• One piece windband with integral rolled bead,
100% welded to an aluminum curb cap (steel with
non-stick material for USGF).

• High strength internal support structure and bracing.

• Motor and drive frame are isolated from the airstream,
mounted on true vibration isolators and sized for
150% of maximum driven horsepower.

• Bearings are pillow block design selected for a
minimum basic L10 life of 100,000 hours (average
L50 life in excess of 500,000 hours) at maximum
cataloged speed.

• NEMA-1 disconnect is mounted and wired
from the factory (NEMA-3R for USGF).

• High wind load roof curb is available for flat
and pitched roofs.

Performance

For full performance listings refer to the
CUE, CUBE, S-CUBE and USGF catalog.

• Air performance AMCA licensed from
400-15,000 cfm (25,000 m

• Pressure range from 0-5 in. wg (1,250 Pa).

• Models CUE, CUBE, S-CUBE and USGF are licensed
to bear the AMCA Seal for Sound and Air.

3

/hr).

3

Fan Models

Models R and RB

Hooded Propeller Roof Fans

Hooded propeller roof fans include both belt and direct
drive fans with fabricated steel, fabricated aluminum
or cast aluminum blades. A variety of model
configurations are available to handle exhaust and
supply requirements. Belt drive fans offer the ability
to adjust fan speed for system balancing if necessary.
Direct drive fans are often preferred for jobs where
maintenance access is difficult.

They can operate from general ventilation up to
industrial duty applications with airstream temperatures
up to 130°F
Miami-Dade test protocols for static loading, missile
impact, and cyclic loading.

Standard Construction Features

• Motors are heavy-duty ball bearing type.

• Fasteners are corrosion-resistant.

• Galvanized steel hood and base with galvanized
birdscreen.

• Galvanized steel with one piece drawn venturi.

• Level 1 and 2 galvanized and riveted steel blades.

• Level 3 heavy-duty welded and reinforced steel blades.

• Bearings are pillow block design selected for a
minimum basic L
L50 life in excess of 500,000 hours) at maximum
cataloged speed.

• Hood is precision formed locked rib construction.

• Available in aluminum or galvanized steel construction.

• Heavy-gauge galvanized steel support members.

(54˚C). Models are tested to all three

life of 100,000 hours (average

10

Model FGI and FGR

Fabra Hoods - Gravity Intake/Relief

The low silhouette Fabra Hoods are designed for
intake (model FGI) or relief (model FGR) applications.
In appearance, load bearing strength, weather
resistance and dimensional flexibility, the Fabra Hood
design is superior. Models are tested to all three
Miami-Dade test protocols for static loading, missile
impact, and cyclic loading.

Standard Construction Features

• Hood is precision formed locked rib construction.

• Available in aluminum or galvanized steel
construction.

• 0.5 in. (13 mm) galvanized steel mesh birdscreens.

• Heavy-gauge galvanized steel support members.

Performance

Refer to models FGI and FGR gravity ventilators catalog
for detailed information.

• The rounded inner surfaces promote smooth
uninterrupted flow of air.

• Cataloged performance data is assured on both
ducted and non-ducted installations with standard
birdscreens.

• Intake and relief units differ in size and performance.

• Large “free area” (opening surrounding the throat)
for intake hoods limits entry of airborne debris and
moisture with lower intake air velocities.

• Relief units are not affected by velocity
considerations, free area is equal to throat area
resulting in lower cost.

Performance

Refer to the Hooded Roof Propeller Fans catalog for
specific information.

• Performance capabilities range from 580 cfm to
28,000 cfm and up to 1.5 in. wg (374 Pa) of
static pressure.

4

Fan Models

Models LBP and LDP

Centrifugal Roof Exhaust Penthouse Style

Models LBP and LDP are designed with an option for
a Severe Duty Louvered Enclosure, SDLE. Enclosure
is constructed of Miami-Dade Approved ESD-603
louvers with a structural steel frame tested to all three
Miami-Dade test protocols for static loading, missile
impact, and cyclic loading. SD curb is standard.

Models are direct and belt driven centrifugal exhaust
fans for applications were 140 PSF design load
requirements are needed.

Model RSF and RSFP

Centrifugal Roof Supply Penthouse Style

Models RSF and RSFP are untempered filtered
centrifugal supply fans. They have been tested to all
three Miami-Dade test protocols for static loading,
missile impact, and cyclic loading. RSF And RSFP are
designed to provide unrestricted clean air airflow and
maximum weather protection. SD curb is standard.

Model RSF is certified using standard galvanized
housing. Model RSFP requires a Severe Duty Louvered
Penthouse to meet certification.

Standard Construction Features

• Constructed of heavy extruded aluminum louvers
with mitered and welded corners with hinged and
removable hood covers.

• Heavy gauge galvanized steel drive frame.

• Bearings are 100% factory tested and designed
specifically for air handling applications with a
minimum L10 life in excess of 100,000 hours
(L50 average life of 500,000 hours).

• Aluminum, backward inclined, non-overloading,
centrifugal wheel is statically and dynamically
balanced.

• Lower windband assembly ensures weather tight
and rigid unit construction.

• NEMA-1 disconnect switch is factory mounted.
Complies with National Electric Codes (NEC) and
are UL Listed or Recognized.

Performance

For full performance listings refer to the Series L
(LBP/LDP) catalog.

• Broadest performance in the industry, up to

1.25 in. wg (311 Pa) and 37,500 cfm (63,713 m

• All LBP and LDP models are licensed to bear the
AMCA Seal for Sound and Air and have licensed air
performance from 100-14,200 cfm.

• UL Listed for electrical.

3

/hr).

Standard Construction Features

• Constructed of heavy gauge galvanized steel sides.

• Easily removed hood covers for access to motor
compartment and drive assembly.

• Double width forward curved centrifugal steel wheel is
utilized to generate high efficiency and minimal sound.

• Bearings are 100% factory tested and designed
specifically for air handling applications with a
minimum L10 life in excess of 100,000 hours
(L50 average life of 500,000 hours).

• NEMA-1 disconnect switch is factory mounted.
Complies with National Electric Codes (NEC) and are
UL Listed or Recognized.

Performance

For full performance listings refer to the
RSF/RSFP catalog.

• Performance up to 2 in. wg (498 Pa) and up to 14,300
cfm (24,300 m
650 cfm (1100 m

• Permanent washable aluminum filters result in many
years of reliable clean use.

• Performance as cataloged is assured. All RSF and
RSFP models are licensed to bear the AMCA Seal for
Air Performance.

3

/hr). Stable performance down to

3

/hr).

5

5

Fan Models

HAWAII

Models SWB, SFB, and SFD

Centrifugal Blowers

SWB is a backward inclined centrifugal fan designed
to handle a variety of applications that include clean
air, high temperatures, contaminated grease and lab
exhaust and high temperature smoke.

SFB and SFD are belt and direct driven forward curved
utility set fans. Designed for clean air applications where
high efficiency is needed. Models are tested to all three
Miami-Dade test protocols for static loading, missile
impact, and cyclic loading.

Standard Construction Features

• SWB - Heavy gauge steel construction in galvanized
or painted steel.
SFD - Heavy gauge galvanized steel construction.
SFB - Heavy gauge painted steel construction.

• Drive frames of rugged, welded steel support shaft
and bearings to provide rigid reinforcement.

• Corrosion-resistant fasteners.

• Heavy-duty ball bearing motors.

• Pivoting motor plate with adjusting screws.

• Streamlined inlet cone design.

BELT DRIVE ONLY

• Machined cast iron pulleys.

• Polished solid steel shafts.

• Bearings are pillow block design selected for a
minimum basic L10 life of 100,000 hours (average
L50 life in excess of 500,000 hours) at maximum
cataloged speed.

Performance

For full performance listings refer to the
SFD SFB and SWB catalog.

• Performance ranging from 232 to over 13,500 cfm.

• Pressures up to 5 in. wg (1250 Pa).

• Performance as cataloged is assured. All SFD, SFB
and SWB models are licensed to bear the AMCA Seal
for Air Performance.

High Wind Requirements

The 2006 International Building
Code requires fans in the
Hurricane-Prone Region to be
high wind certified and impact tested.
This is in accordance with the large missile test
requirements of ASTM E1996 (TAS 201) if within
the Wind-Borne Debris Region, which is defined
as one of these three:

1. 120 mph basic wind speed

2. 110 mph basic wind speed within
one mile of the coast

3. All of Hawaii

ASCE-7, which is adopted by the IBC, defines wind
speeds (mph) and provides methods for determining
wind loads (psf).

6

6

 = 90 mph

 = 100 mph

 = 110 mph

 = 120 mph

 = 130 mph

 = 140 mph

 = 150 mph

Protocol Descriptions

TAS-201:
Large Missile Impact Test (ASTM E1996)

The Florida Building Code requires that products installed
in the Wind-Borne Debris Zone or High-Velocity Hurricane
Zone must meet or exceed impact test criteria established
under TAS-201. Products may be exempt if utilized in
“open” structures or installed more than 30 feet
above grade. This test procedure measures a product’s
capacity to withstand impact from wind-borne debris under
hurricane-force wind velocities.

Test Fan Size: Maximum size selected by manufacturer
for certification.

Test Missile: 7 foot
pine 2 x 4; 9.0 to 9.5 pounds.

Distance from Front of Canon to Face of Fan:
9 feet (2.75 m).

Impact Velocity: 50 feet per second

Procedure: Three specimens are tested. One impact is

delivered at the center of each specimen and one impact is
delivered at top and bottom of each specimen, for a total of
three impacts.

Pass/Fail: Failure occurs if a change in the condition of the
specimen results…such as “cracking, fastener loosening,
local yielding” or if penetration of the projectile occurs
beyond the inside plane of the fan.

TAS-202:
Uniform Static Air Pressure Test (ASTM E330)

The Florida Building Code requires that all products utilized
in structures located throughout the state meet or exceed
the structural test criteria established under TAS-202.
This test procedure measures a product’s ability to
withstand maximum static pressure differentials typical
to hurricane events.

Applicable

For

Wind-Borne

Debris

Region

High-Velocity

Hurricane

Zone

Enhanced
Hurricane

Protection

Areas

All Other

Regions

( 2.1 m) to 9 foot (2.75 m) long Southern

Description Required Products

Basic wind speed is

120 mph or greater; or,

110 mph and within 1

mile of the coast

Broward and Dade

Counties

Public buildings

designed to provide

emergency shelter;

wind load determined

by wind speed map

plus 40 mph

Florida Product

Approved

Miami-Dade

Qualified Products

Florida Product

Approved or Miami-

Dade Qualified (in

Dade or Broward

counties)

Florida Product

Approved

(15.25 m/s).

Protocol

Required

TAS 201
TAS 202
TAS 203

TAS 201
TAS 202
TAS 203

TAS 201
TAS 202
TAS 203

TAS 202

(9 m)

Approval Body

Florida Building

Code Office

Miami-Dade

Building Code

Compliance

Office

Florida Building

Code Office or

Miami-Dade

Building Code

Compliance

Office

Test Fan Size: Maximum size to be certified by
manufacturer.

Design Pressure (Design Wind Load): Maximum positive
or negative wind load to be certified by manufacturer.

Test Load: 2 x the selected design pressure.

Procedure: Specimen is subjected to a series of positive

and negative pressures increasing from ½ test load to
full test load.

Duration: 30 seconds maximum.

Recovery Period: 1 to 5 minutes.

Pass/Fail: Failure occurs if a change in the condition of the

specimen results… such as “cracking, fastener loosening,
local yielding” or, if permanent deformation results greater
than 80% of maximum allowable deflection.

TAS-203:
Cyclic Wind Pressure Load Test

The Florida Building Code requires this test to be
conducted after completion of TAS-201: Large Missile
Impact Test, to identify possible weaknesses resulting from
the missile impact test. This test procedure assesses a
product’s capacity to withstand wind vibration imparted
under hurricane-force wind velocities.

Test Fan Size: Maximum size to be certified by
manufacturer.

Design Pressure (Wind Load): Maximum positive or
negative wind load to be certified by manufacturer.

Load Sequence: Application of positive load test followed
by application of negative load test.

Duration: 5 seconds maximum.

Procedure: 600 cycles at 1/2 x design pressure; 70

cycles at 0.6 x design pressure and 1 cycle at 1.3 x design
pressure.

Pass/Fail: Failure occurs if a change in the condition of the
specimen results…such as “cracking, fastener loosening,
local yielding” or if permanent deformation results greater
than 80% of maximum allowable deflection.

Wind-Borne Debris Region

(highlighted in blue)

7

7

Anchoring

Metal Building/Steel Deck Anchoring

1

⁄4 inch (32 mm)

1

1

⁄4 inch

1

(32 mm)

Corner Detail

Fan Model Fan Size

G, GB, CUE, CUBE,

S-CUBE, USGF

G, GB, CUE,CUBE,

S-CUBE, USGF

060 to 141 N/A

161 to 300 N/A

FGI/FGR, R/RB 18 to 24

FGI/FGR, R/RB 30 to 36

FGI/FGR, R/RB 42

Gravity Throat Size

(203 x 203 to 610 x 610) mm

(635 x 635 to 1372 x 1372 mm)

(1397 x 11397 to 1676 x 1676 mm)

RSF/RSFP 90 to 120 N/A

RSF/RSFP 150 N/A

RSF/RSFP 180 to 200 N/A

Models FGI & FGR

8 x 8 to 24 x 24

25 x 25 to 54 x 54

55 x 55 to 66 x 66

18 ga. minimum steel
roof curb 8-24 in.
(203-610 mm) height.
Greenheck H-GPF,
GPF, SD or SDP curbs

Roof Truss

5 in. (127 mm)

Mounting Flange

1 in. (25 mm)
Insulation

Roof Opening

Minimum
12 Ga. Steel

Outside Flange

Curb Cap Size

17 x 17 to 22 x 22

(432 x 432 to 559 x 559 mm)

26 x 26 to 40 x 40

(660 x 660 to 1016 x 1016 mm)

14 x 14 to 30 x 30

(356 x 356 to 762 x 762 mm)

31 x 31 to 51 x 51

(787 x 787 to 1295 1295 mm)

52 x 52 to 72 x 72

(1321 x 1321 to 1829 x 1829 mm)

26 x 26 to 34 x 34

(660 x 660 to 864 x 864 mm)

40 x 40

(1016 x 1016 mm)

46 x 46 to 52 x 52

(1168 x 1168 to 1321 x 1321 mm)

Note: Fasteners required only on two opposite sides of curb. Fasten on longer sides of curb if rectangular.

Number of

Fasteners per side

2 4

3 6

2 4

3 6

4 8

3 6

4 8

5 10

Use 1⁄4 in. (6 mm) self-drilling screws or equal
for spun aluminum and RSF fans − and
(8 mm) self drilling screw for the R/FGI/FGR .

Fasteners one on each corner as detailed.

Each side at center of unit. Maximum fastener
spacing of 8 in. (203 mm), add additional
fasteners to satisfy.

Corrugated
Roof Deck

Center fasteners
on flange

Total

Fasteners

5

⁄16 in.

Concrete Deck Anchoring

1

1

⁄4 inch (32 mm)

1

1

⁄4 inch

(32 mm)

18 ga. minimum steel
roof curb 8-24 in.
(203-610 mm) height.
Greenheck H-GPF, GPF,

Corner Detail

Minimum Concrete
Strength of 2000 PSI

5 in. (127 mm) Mounting Flange

SD or SDP curbs

3

⁄4 in.

Minimum 1
(44 mm) edge distance

Roof Opening

Minimum 1
(44 mm) edge distance

Outside Flange

8

3

⁄4 in.

3

⁄8 in. (10 mm) Hilti Kwik Bolt 3 expansion

Use
anchors or equal into concrete.

Fasteners one on each corner as detailed.

Each side at center of unit. Maximum fastener
spacing of 8 in. (203 mm),
add additional fasteners to satisfy.

1

⁄2 in. (64 mm) Embedment

2
Recommended

5

⁄8 in. (41 mm)

minimum 1

Center fasteners
on flange

Anchoring

Wood Deck Anchoring

1

⁄4 inch (32 mm)

1

1

⁄4 inch

1

(32 mm)

Corner Detail

Wood Support Member

Fan Model Fan Size

G, GB, CUE, CUBE,

S-CUBE, USGF

G, GB, CUE, CUBE,

S-CUBE, USGF

060 to 141 N/A

161 to 300 N/A

FGI/FGR, R/RB 18 to 20

FGI/FGR, R/RB 24

FGI/FGR, R/RB 30 to 36

FGI/FGR, R/RB 42

Gravity Throat Size

Models FGI & FGR

8 x 8 to 24 x 24

(203 x 203 to 610 x 610 mm)

25 x 25 to 48 x 48

(635 x 635 to 1219 x 1219 mm)

49 x 49 to 54 x 54

(1245 x 1245 to 1372 x 1372 mm)

55 x 55 to 66 x 66

(1397 x 1397 to 1676 x 1676 mm)

RSF/RSFP 90 to 120 N/A

RSF/RSFP 150 N/A

RSF/RSFP 180 to 200 N/A

Note: Fasteners required only on two opposite sides of curb. Fasten on longer sides of curb if rectangular.

18 ga. minimum steel
roof curb 8-24 in.
(203-610 mm) height.
Greenheck H-GPF, GPF,
SD or SDP curbs

Wood Decking

Nominal 4 x 4, 6, 8

1 in. (25 mm)
insulation

Roof Opening

5 in. (127 mm)
Mounting Flange

Outside Flange

Curb Cap Size

17 x 17 to 22 x 22

(432 x 432 to 559 x 559 mm)

26 x 26 to 40 x 40

(660 x 660 to 1016 x 1016 mm)

14 x 14 to 33 x 33

(356 x 356 to 838 x 838 mm)

34 x 34 to 39 x 39

(864 x 864 to 991 x 991 mm)

40 x 40 to 51 x 51

(1016 x 1016 to 1295 mm)

52 x 52 to 72 x 72

(1321 x 1321 to 1829 x 1829 mm)

26 x 26 to 34 x 34

(660 x 660 to 864 x 864 mm)

40 x 40

(1016 x 1016 mm)

46 x 46 to 52 x 52

(1168 x 1168 to 1321 x 1321 mm)

Number of

Fasteners per side

2 4

3 6

2 4

3 6

4 8

5 10

3 6

4 8

5 10

Spun aluminum and RSF, 3⁄8

7

R/FGI/FGR,
minimum No. 1/No. 2 southern pine wood support.

Fasteners one on each corner as detailed.

Each side at center of unit. Maximum fastener spacing
of 6 in. (152 mm), add additional fasteners to satisfy.

⁄16

in. (10 mm) lag screws −

in. (83 mm) lag screws or equal into

Spun aluminum
3
3
embedment

Center fasteners
on flange

1

⁄4 in. (83 mm)−R/FGI/FGR,

1

⁄2 in. (89 mm) minimum

RSF,

Total

Fasteners

Concrete Deck Anchoring

Fan Model Fan Size

G, GB, CUE, CUBE,

S-CUBE, USGF

G, GB, CUE, CUBE,

S-CUBE, USGF

060 to 141 N/A

161 to 300 N/A

FGI/FGR, R/RB 18 to 24

FGI/FGR, R/RB 30 to 42

RSF/RSFP 90 to 120 N/A

RSF/RSFP 150 N/A

RSF/RSFP 180 to 200 N/A

Note: Fasteners required only on two opposite sides of curb. Fasten on longer sides of curb if rectangular.

Gravity Throat Size

Models FGI & FGR

8 x 8 to 48 x 48

(203 x 203 to 1219 x 1219 mm)

49 x 49 to 66 x 66

(1245 x 1245 to 1676 x 1676 mm)

Curb Cap Size

17 x 17 to 22 x 22

(432 x 432 to 559 x 559 mm)

26 x 26 to 40 x 40

(660 x 660 to 1016 x 1016 mm)

14 x 14 to 33 x 33

(356 x 356 to 838 x 838 mm)

40 x 40 to 51 x 51

(1016 x 1016 to 1295 x 1295 mm)

26 x 26 to 34 x 34

(660 x 660 to 864 x 864 mm)

40 x 40

(1016 x 1016 mm)

46 x 46 to 52 x 52

(1168 x 1168 to 1321 x 1321 mm)

9

Number of

Fasteners per side

2 4

3 6

2 4

3 6

3 6

4 8

5 10

Total

Fasteners

Mounting

SWB/SFB/SFD Mounting

5

HILTI KB11 or equivalent

3

⁄8 in. (9 mm) -16 x 3 minimum

1

2

⁄2 engagement

(1 each corner)

2000 minimum
PSI concrete

⁄16 in. (8 mm) Self-tapping

screw minimum

(13 mm) of threads through

(1 each corner)

Roof Truss

1

⁄8 in. (3 mm) thick or

12 gauge minimum

1

⁄2 in.

Concrete Deck Anchoring

Steel Anchoring

5

⁄8 in. (16 mm) lag screw
minimum 1
thread engagement
(two per equipment support)

18 gauge galvanized G90
with wood nailer

3 supports required
for sizes 20 and larger

1

⁄2 in. (38 mm)

Equipment Support Anchoring

Typical Mounting

Fan to Curb - G, GB, CUE, CUBE & S-CUBE

7

⁄16 in. (11 mm) lag bolt

1

minimum 3
thread engagement
(1 each corner)

Wood timber minimum 4 in.

(102 mm) nominal thickness

minimum G = 0.42

⁄4 in. (83 mm)

Timber

Anchoring

1

Bolt,

⁄2 in. (13 mm)-

13 (1 each corner)

Isolator

Anchoring

Model SWB Series 100 and 200 are designed for
supply, exhaust and return air applications. Tests
were conducted to assure safe, rugged and reliable
fans capable of withstanding severe conditions.

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.

RSF, FGR, FGI, R & RB

G/GB CUE/CUBE

S-CUBE

Spun Aluminum Models

Fan Size Curb Cap Size

060 - 161

180 - 240

260 -300

17 x 17 - 22 x 22 in.

(431 x 431 - 559 x 559 mm)

30 x 30 - 34 x 34 in.

(762 x 762 - 864 x 864 mm)

40 x 40 in.

(1016 x 1016 mm)

Fasteners on each
side of the fan are to
be installed with one
fastener 4 inches

(102 mm) from each

edge and one
fastener centered.
The remaining
fasteners are to be
equally spaced.

Fasteners

Per Side

3 12

5 20

9 36

Total

Fasteners

Three fasteners required per side on all sizes.

5

Fasteners shall be

⁄16 in. (8 mm) minimum installed one

each corner and one at center per side.

10

Roof Curbs

Roof Curbs

Greenheck hurricane and high wind fans are designed
for easy mounting to a variety of roof curbs. For your
convenience Greenheck offers the industry’s largest
selection of tested and approved High Wind and
Hurricane roof curbs. Greenheck Models GPF, GPFP,
GPFV, SD and SDP curbs offer fully configurable sizes
for both flat and pitched roofs. Selectable in sizes up
to 80 x 80 inches (2032 x 2032 mm) and heights ranging
from 8 inches (203 mm) to 24 inches (610 mm) tall.

For applications where factory supplied curbs are not
an option, the Greenheck high wind and hurricane fans
can be used in conjunction with any previously installed
or customer supplied curbs as long as they meet a
series of minimum requirements. Considerations like
no wood nailers, minimum material gauges and specific
material types may allow field supplied curbs to
be acceptable.

GPFV

The GPFV vented roof curb is typically used for kitchen
applications; the vents allow hot air and gases to
escape between the ductwork and roof curb. This curb
is designed for use with Greenheck fan models CUBE
and CUE to provide the required 40 inch (1016 mm)
minimum discharge height above the roof line per
NFPA 96. This curb is to be used on non-insulated flat
roof decks. Model GPFV is mounted directly to the roof
deck structure, roofed to the vertical surface and sealed
to the 5-inch flashing flange. It is available in nine
different sizes.

GPF

The GPF is a straight sided curb constructed of heavy
gauge galvanized steel with a 5-inch (127 mm) flashing
flange. It is designed specifically for use in high wind
applications on flat roofs. Roofing material can be
wrapped up over the top of the curb or can be directly
flashed to the side of the curb for a complete tested and
certified installation.

GPFP

The GPFP is similar in construction to the GPF. It is
constructed of heavy gauge galvanized steel and can be
configured to match the pitch of the roof ensuring that
any fan mounted to the GPFP is going to sit level and
operate properly. The 5-inch (127 mm) flashing flange
can be used to secure the curb to the roof of metal
(steel), concrete or wood frame building and easily
flashed over to ensure weather tightness.

Special Purpose Roof Curbs

SD

The SD curb is Greenheck’s highest strength curb
constructed with a minimum 12 gauge high strength
steel. A 2-inch (51 mm) reinforcement angle is provided
on taller sizes. The fan curb is coated as standard with
our Permatector™ high performance coating (other
coatings available). The SD curb is available in heights
up to 24 inches (610 mm) and is ideal for larger and
heavier units or areas where the wind speed are the
most extreme.

SDP

The SDP curb is similar in construction to the SD.
Minimum 12 gauge steel with the 2-inch (51 mm)
reinforcements and a 4-inch (102 mm) flashing flange
make it strong and easy to install. The curb can be
configured to match the pitch of a sloped roof so
that the fans sit level on the curb. This curb is ideal
for supporting heavier, larger equipment or for use in
extreme wind conditions.

11

Other Severe Duty Products

Louvers

Florida Product Approved
and Miami-Dade Qualified

Greenheck offers both Florida Approved and Miami­Dade Qualified Louver products. Models are available
that comply with TAS-201 Large Missile Impact Test
(ASTM E1996), TAS-203 Cyclic Wind Pressure Load
Test, Uniform Static Pressure Test (ASTM E330)
and Miami-Dade structural test protocols TAS-201.
For specific details on qualifying products refer to
Greenheck’s Severe Duty Louvered Products catalog.

Laboratory Exhaust Systems

Entire Vektor product line

The entire product line of Vektor laboratory exhaust
fans are designed to withstand 125 mph windload
ratings. No guy wires are needed on these products,
allowing complete systems in this line to be installed
more efficiently with fewer roof penetrations in the field.
For more information on all the benefits of these high
wind Vektor products, please refer to any of the
Vektor Laboratory Exhaust Systems product catalogs
or contact the factory.

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

Greenheck P.O. Box 410 • Schofield, WI 54476-0410 • Phone [phone] • greenheck.com

Copyright © 2010 Greenheck Fan Corp. • 00.F&V.NB001 R1 3-2010 R