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LAMPS CONTAIN MERCURY. DISPOSE ACCORDING TO
LOCAL, STATE OR FEDERAL LAWS
Safe and convenient means of
disconnecting power.
COOPER LIGHTING - METALUX
®
GR8
Flat, White
Steel (White L atches)
CEILING COMPATIBILITY
COOPER LIGHTING
DESCRIPTION
The GR8 is a T8-dedicated lensed troffer designed to offer premium
performance in a low profile housing. T8 dedication and optimized
lamp to lens spacing provides the best in energy efficiency and optical
control. The GR8’s shallow, low profile housing is compatible with even
highly restrictive plenums. Luminaires are compatible with today’s
popular ceiling systems.
The GR8 offers great performance and great quality. The series is an
excellent choice for commercial offices, schools, hospitals, retail
merchandising and many other applications.
EB Ballast & STD Lamps
232 (61)
ES Ballast & STD Lamps
232 (71)
Luminaire Efficacy Rating
LER = FL-58
Catalog Number: GR8-232A
Yearly Cost of 1000 lumens,
3000 hrs at .08 KWH = $4.14
*Standard G (Grid) Type Fixtures can be
field converted by adding trim kits. See
Compatibility Section or Consult Factory.
**Reference the lamp/ballast data in the
Technical Section for specific lamp/ballast
requirements.
***Order FCS-14W-U Flange Kit for
installation in drywall ceiling. See options
and accessories compatibility section.
GR8
232
1' X 4' TROFFER
2 LAMP
General Purpose
T8 Commercial Troffer
ADF031753
ENERGY DATA
Input Watts:
SPECIFICATION FEATURES
Construction
Low profile recessed housing is
die formed of code gauge prime
cold rolled steel with full length
stiffeners and mechanical
endplate attachment for added
strength. Ballast cover is easily
removed without tools. Die
formed captive lampholder
bracket fully encloses
lampholder wiring for easy
lampholder replacement. Ample
KOs are provided for continuous
row wiring. Built-in grid-lock
feature for safety and
convenience.
Electrical**
Ballasts are CBM/ETL Class “P”
and are positively secured.
Pressure lock lampholders.
UL/CUL listed. Suitable for
damp locations.
Finish
Multistage, iron phosphate
pretreatment ensures maximum
bonding and rust inhibition.
Lighting grade baked white
enamel finish with premium
reflectance for high efficiency.
Hinging/Latching
Positive cam action steel latches
and integral safety hinges
provide secure, high quality
door fit and allow hinging and
latching from either side.
G
Grid/Lay-in
Standard
G
Concealed T
G
Slot Grid
F
Flange Trim
With Supporting
Swing Gates
Ceiling Trim
Type Type
Exposed Grid G
Concealed T G
Slot Grid G
Flange G***
(Verify compatibility/ consult
factory.)
LAMP CONFIGURATIONS
MOUNTING DATA
DOOR FRAMES
Frame/Shielding
Heavy gauge flat steel door is die
formed with reinforced mitered
corners. Housing and door frame
assemblies incorporate full length
and width mechanical light traps.
Light stabilized, acrylic prismatic lens.
Controls
Fifth Light ballast options are
offered for both 0-10V continuous
dimming and DALI applications.
Combine with energy-saving
products like occupancy sensors,
daylighting controls, and lighting
relay panels from Cooper Controls
(www.coopercontrol.com) to
maximize energy savings.
Catalog #
Project
Comments
Type
Date
Prepared by
7/8" [22mm] K.O. (2)
11-3/4"
[298mm]
3-1/2" [89mm]
3-3/4" [95mm]
5"
[127mm]
11-3/4"
[298mm]
48" [1219mm]
11-3/4" [298mm]
Access Plate
7/8" [22mm] K.O. (2)
1-1/2"
[38mm]
5-3/4" [146mm]
8-7/32" [209mm]
3-3/4"
[95mm]
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Candlepower
Angle Along II 45° Across ⊥
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Coefficients of Utilization
Effective floor cavity reflectance 20%
rc 80% 70% 50% 30% 10% 0%
rw 70 50 30 10 70 50 30 10 50 30 10 50 30 10 50 30 10 0
RCR
0
1
2
3
4
5
6
7
8
9
10
Typical VCP Percentages
Height Along Height Across
Room Size (Ft.) 8.5’ 10.0’ 8.5’ 10.0’
20 x 20
30 x 30
30 x 60
60 x 30
60 x 60
PHOTOMETRICS
Zonal Lumen Summary
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
1704 1704 1704
1695 1701 1699
1674 1683 1685
1637 1650 1652
1583 1597 1595
1511 1519 1496
1418 1405 1357
1300 1260 1199
1158 1089 1030
988 902 854
795 718 677
619 550 508
462 393 369
332 264 272
235 175 211
167 129 172
123 107 132
65 60 72
00 0
GR8-232A
Electronic Ballast
F32T8/35K lamps
2800 lumens
Spacing criterion:
(II) 1.2 x mounting
height, (⊥) 1.2 x
mounting height
Efficiency 68.2%
Test Report:
GR8232A.IES
LER = FL-58
Yearly Cost of 1000
lumens, 3000 hrs at
.08 KWH = $4.14
1322 23.6 34.6
2104 37.6 55.1
3301 58.9 86.4
3821 68.2 100.0
3821 68.2 100.0
61 64 62 67
54 58 54 59
45 48 44 47
56 60 57 61
46 49 45 48
81 81 81 81 79 79 79 79 76 76 76 73 73 73 70 70 70 68
75 73 70 68 74 71 69 67 68 66 65 66 64 63 63 62 61 60
70 65 61 58 68 64 60 57 61 58 56 59 57 55 57 55 53 52
65 59 54 50 63 58 53 50 56 52 49 54 51 48 52 49 47 46
60 53 47 43 58 52 47 43 50 46 43 49 45 42 47 44 42 40
55 47 42 38 54 47 41 38 45 41 37 44 40 37 43 39 36 35
51 43 37 33 50 42 37 33 41 36 33 40 36 33 39 35 32 31
47 39 33 29 46 38 33 29 37 33 29 36 32 29 35 32 29 27
44 35 30 26 43 35 29 26 34 29 26 33 29 25 32 28 25 24
40 32 26 23 39 31 26 22 30 26 22 30 25 22 29 25 22 21
38 29 24 20 37 28 23 20 28 23 20 27 23 20 27 23 20 19
GR8
ADF031753
Customer First Center 1121 Highway 74 South Peachtree City, GA 30269 770.486.4800 FAX 770.486.4801 4/13
Visit our web site at www.cooperlighting.com
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GR8
ADF031753
Customer First Center 1121 Highway 74 South Peachtree City, GA 30269 770.486.4800 FAX 770.486.4801 4/13
Visit our web site at www.cooperlighting.com
SHIPPING INFORMATION
Catalog No. Wt.
GR8-232A 19 lbs.
NOTES:
(1)
An EQ Grid Clip is recommended for all 9/16" ceiling systems. Four required per fixture.
(2)
Products also available in non-US voltages and frequencies for international markets.
(3)
Not available
when specifying emergencies, voltage must be specific.
(4)
For a complete listing of Fifthlight Technology
products and other solutions from Cooper Controls, visit www.coopercontrol.com.
(5)
0-10V ballast do not include
DALI feature. Please select DALI ballast for use with Fifth Light system.
(6)
Specification grade 0-10V dimming
ballast are NEMA premium and CEE listed. They are compatible with low mercury and energy saving lamps.
For complete product data, reference the Fluorescent Specification binder. Specifications & dimensions
subject to change without notice. Consult your Cooper Lighting Representative for availability and ordering
information.
ORDERING INFORMATION
SAMPLE NUMBER: GR8-232A-120V-EB81-U
Number of
Lamps
2=2 Lamps
(Not included)
Wattage
32=32W T8 (48")
Shielding
A=#12 Acrylic Pattern
A125=#12 Pattern Acrylic
(.125" Thick)
Width
Blank=
1' Width
Series
R8=General Purpose
T8 Commercial
Troffer
(1)
Voltage
(2)
120V=120 Volt
277V=277 Volt
347V=347 Volt
UNV=Universal Voltage 120-277
(3)
Options
GL=Single Element Fuse
GM=Double Element Fuse
Lamps=Lamps Installed
Flex=Flex Installed
EL=Emergency Installed
Options
FR=Fire Label
Packaging
U=Unit Pack
Accessories
EQ=T-BAR Safety Earthquake Clips
(1)
FCS-XXW-U=Field Insatlled Flange Kit
Trim Type
G=Grid/Lay-in
(Standard)
F=Flange Trim
Ballast Type
EB8
=T8 Electronic Start.
Total Harmonic Distortion < 10%
EB8
/PLUS= T8 Electronic Start.
Total Harmonic Distortion < 10%.
High Ballast Factor > 1.15.
ER8
= T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%
High Performance T8 Ballasts
HB8
=T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
Standard Ballast Factor .86 – .88
HB8
L=T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
Low Ballast Factor .77 – .82
HB8
N=T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
Normal Ballast Factor 1.0
HB8
H=T8 Electronic Instant Start.
Total Harmonic Distortion < 10%.
High Ballast Factor 1.15 – 1.20
HR8
T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
Standard Ballast Factor .86 – .88
HR8
DIM=T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
Step Dimming. Ballast Factor .88
HR8
L=T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
Low Ballast Factor .71 – .79
HR8
H=T8 Electronic Program Rapid Start.
Total Harmonic Distortion < 10%.
High Ballast Factor 1.15 – 1.20
0-10V Dimming Ballasts
(5)
5LTV8 =T8 0-10V Program Rapid Start.
Total Harmonic Distortion < 10%.
Ballast Factor 0.87
5LTVS8
=T8 0-10V Spec Grade Program Rapid
Start. Total Harmonic Distortion <
10%. Ballast Factor 0.87
(6)
Fifth Light DALI Ballasts
(4)
5LT8 =T8 DALI Program Rapid Start.
Total Harmonic Distortion < 10%.
Ballast Factor 1.0
Number of Ballasts
1=1 Ballast
2=2 Ballasts
3=3 Ballasts
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