COOPER LIGHTING - METALUX
®
DESCRIPTION
Type
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.
Catalog #
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.
Prepared by
Project
Date
Comments
SPECIFICATION FEATURES
Construction
Electrical**
Frame/Shielding
Unitized low profile
recessed housing is die
formed of code gauge
prime cold rolled steel with
full length stiffeners and
unibody endplate 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 gridlock feature for safety and
convenience.
Ballasts are CBM/ETL Class “P” and are
positively secured by mounting bolts.
Rotor-lock lampholders. Biaxial models
use 2G11 base lampholders with doubleedge wiping action pressure-lock
contacts and horizontally oriented lamp
support clips. UL/CUL listed. Suitable for
damp locations.
Heavy gauge flat steel door is die
formed with reinforced mitered
corners. Housing and door frame
assemblies incorporate full width
mechanical light traps. Light
stabilized, acrylic prismatic lens.
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 spring loaded steel latches and
safety lock T-hinges provide secure, high
quality door fit and allow hinging and
latching from either side.
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.
2GR8
317
3BX40
3U1-5/8
2' X 2' TROFFER
3 LAMP
General Purpose
T8 Commercial Troffer
3-1/4"
[83mm]
23-3/4" [603mm]
ENERGY DATA
Input Watts:
MOUNTING DATA
EB Ballast & STD Lamps
317 (52), 3BX40 (98), 3U1-5/8 (88)
LAMP CONFIGURATIONS
317
1"
[26mm]
X=5-3/8"
[137mm]
23-3/4"
[603mm]
ES Ballast & STD Lamps
317 (69), 3BX40 (125), 3U1-5/8 (105)
3-1/4" [83mm]
2-11/16"
[69mm]
X
X
Luminaire Efficacy Rating
LER = FL-61
Catalog Number: 2GR8-317A
23-3/4" [603mm]
3BX40
3-1/4" [83mm]
1-1/2"
[38mm]
X=13/16"
[21mm]
Y=4-9/16"
[116mm]
2-3/4" [70mm]
5-3/4" [146mm]
23-15/16" [610mm]
Y
Y
X
X
23-3/4" [603mm]
Yearly Cost of 1000 lumens,
3000 hrs at .08 KWH = $3.93
3U1-5/8
DOOR FRAMES
*Standard G (Grid) Type Fixtures can be
field converted by adding trim kits. See
Compatibility Section or Consult Factory.
3-1/4" [83mm]
X=1-5/8"
[42mm]
Y=4-3/8"
[112mm]
2GR8
F lat, White
Steel ( White
L atches)
X
Y
Y
X
**Reference the lamp/ballast data in the
Technical Section for specific lamp/ballast
requirements.
23-3/4" [603mm]
***When ordering Flange Kit for
installation in drywall ceilings, see options
and accessories compatibility section and
ordering logic.
CEILING COMPATIBILITY
G
Grid/Lay-in
Standard
G
Concealed T
COOPER LIGHTING
G
Slot Grid
F
Flange Trim
With Supporting
Swing Gates
Ceiling
Type
Trim
Type
Exposed Grid
Concealed T
Slot Grid
Flange
G
G
G
G***
LAMPS CONTAIN MERCURY. DISPOSE ACCORDING TO LOCAL,
STATE OR FEDERAL LAWS
Safe and convenient means of
disconnecting power.
ADF012706
2GR8
PHOTOMETRICS
2GR8-317A
Electronic Ballast
(3) F17T8 lamps
1350 lumens
Spacing criterion:
(II) 1.2 x mounting
height, (⊥) 1.3 x
mounting height
Efficiency 73%
Test Report:
2GR8317A.IES
LER = FL-61
Yearly Cost of 1000
lumens, 3000 hrs at
.08 KWH = $3.93
Candela
Angle
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
Along II
1171
1167
1150
1121
1079
1025
961
877
772
658
530
419
323
238
180
140
103
54
0
Across ⊥
1171
1172
1169
1161
1145
1118
1069
1009
932
826
687
538
395
273
207
165
120
62
0
45°
1171
1167
1157
1139
1111
1074
1021
948
855
729
599
474
335
223
150
118
99
58
0
Coefficients of Utilization
rc
rw
RCR
0
1
2
3
4
5
6
7
8
9
10
Effective floor cavity reflectance
80%
70%
70 50 30 10
70 50 30 10
87
80
73
67
62
57
53
49
46
43
40
87
77
68
60
54
48
44
40
36
33
31
87
74
63
54
48
42
37
34
30
28
25
87
71
59
50
43
37
33
29
26
24
21
85
78
71
66
60
56
52
48
45
42
39
85
75
66
59
53
47
43
39
36
33
30
85
72
62
54
47
42
37
33
30
27
25
85
70
58
50
43
37
33
29
26
24
21
20%
50%
50 30 10
30%
50 30 10
50
81
72
64
57
51
46
42
38
35
32
30
78
69
61
55
49
44
40
37
34
31
29
75
67
59
53
48
43
39
36
33
31
28
81
70
60
52
46
41
36
33
30
27
25
81
68
57
49
42
37
32
29
26
23
21
78
67
58
51
45
40
36
32
29
27
24
Zonal Lumen Summary
Luminance Data
Zone
0-30
0-40
0-60
0-90
0-180
Angle
in Deg
45
55
65
75
85
Lumens
927
1516
2507
2957
2957
%Lamp
22.9
37.4
61.9
73.0
73.0
%Fixture
31.3
51.3
84.8
100.0
100.0
Average
0-Deg
cd/sm
3269
2567
1979
1901
2177
78
66
56
48
41
36
32
29
26
23
21
Average
45-Deg
cd/sm
3622
2904
1854
1602
2338
10%
30 10
75
65
57
50
44
39
35
32
29
26
24
75
64
55
47
41
36
32
28
26
23
21
0%
0
73
62
53
45
39
34
30
27
24
22
20
Average
90-Deg
cd/sm
4104
3296
2270
2240
2499
Visit our web site at www.cooperlighting.com
Customer First Center 1121 Highway 74 South Peachtree City, GA 30269 770.486.4800 FAX 770.486.4801
4/13
ADF012706
2GR8
ORDERING INFORMATION
SAMPLE NUMBER: 2GR8-317A-UNV-EB81-U
Rating (5)
Blank=
Standard
ATW-SW4=
Chicago
Rated
Width
2=2' Width
Trim Type
G=Grid/Lay-in
(Standard)
Series
R8=General Purpose
T8 Commercial
Troffer (1)
Number of
Lamps (4)
3=3 Lamps
(Not included)
Wattage
17=17W T8 (24")
U1-5/8=31W T8 (24" )(7)
BX40=40W Biaxial (24")
Shielding
A=#12 Acrylic Pattern
A125=#12 Pattern Acrylic
(.125" Thick)
A19/156=#19 Pattern
Acrylic (.156" Thick)
PB1S=Silver Parabolic
Flanged Louver (1/2" x
1/2" x 1/2")
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
(1)
NOTES: An EQ Grid Clip is recommended for all 9/16" ceiling systems. Four required per
(2)
fixture. Products also available in non-US voltages and frequencies for international markets.
(3)
(4)
Not available when specifying emergencies, voltage must be specific. Standard off-center
(5)
ballast compartment on 3-lamp fixtures. For NYC rated product, see separate specification
(6)
(7)
sheets. Not available in UNV voltages. Must specify voltage. Fifthlight ballast option not
(8)
available. For a complete listing of Fifthlight Technology products and other solutions from Cooper
Controls, visit www.coopercontrol.com.
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.
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%
EB5 =T5 Biax Electronic Instant Start. Total
Harmonic Distortion < 20% (6)
TEB5 =T5 Biax Electronic Instant Start.
Total Harmonic Distortion < 10% (6)
ER5 = T5 Biax 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
Options
FR=Fire Label
Packaging
U=Unit Pack
ACCESSORIES
EQ-CLIP-U=T-BAR Safety Earthquake Clips (1)
FCTKA-22W-U=Field Installed Flange Kit
FCTK
A – 24
R W – U
Trim Kit
Field
Convertible
22=2' x 2'
24=2' x 4'
N=Natural
W=White
Blank=Single
R=In Row
E=End Row
U=Unit Pack
Aluminum
Fifth Light DALI Ballasts (8)
5LT8 =T8 DALI Program Rapid Start.
Total Harmonic Distortion < 10%.
Ballast Factor 1.0
5LT5B = T5 Biax DALI Program Rapid Start.
Total Harmonic Distortion < 10%.
Ballast Factor 1.0
Number of Ballasts
1=1 Ballast
2=2 Ballasts
3=3 Ballasts
SHIPPING INFORMATION
Catalog No.
Wt.
2GR8-317A
2GR8-3BX40A
2GR8-3U1-5/8
10 lbs.
10 lbs.
10 lbs.
Visit our web site at www.cooperlighting.com
Customer First Center 1121 Highway 74 South Peachtree City, GA 30269 770.486.4800 FAX 770.486.4801
4/13
ADF012706