Dimensions Guide

Catalog #
Type
Date
Project
Comments
Prepared by
LAMPS CONTAIN MERCURY. DISPOSE ACCORDING TO
LOCAL, STATE OR FEDERAL LAWS
Safe and convenient means of
disconnecting power.
COOPER LIGHTING - METALUX
®
23-3/4" [603mm]
3-1/4"
[83mm]
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
217 (36) , 2U1-5/8 (61), 2U6T8 (61)
417 (63) , 2BX40 (71)
ES Ballast & STD Lamps
217 (45) , 2U1-5/8 (71), 2U6T8 (71)
417 (90), 2BX40 (77)
Luminaire Efficacy Rating
LER = FL-73
Catalog Number: 2GR8-2U6T8A
Yearly Cost of 1000 lumens, 3000
hrs at .08 KWH = $3.29
*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.
***When ordering Flange Kit for
installation in drywall ceilings, see options
and accessories compatibility section and
ordering logic.
2GR8
2U6T8, 2BX40
2U1-5/8
217, 417
2' X 2' TROFFER
2 OR 4 LAMPS
General Purpose
T8 Commercial Troffer
ADF012705
ENERGY DATA
Input Watts:
SPECIFICATION FEATURES
Construction
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 grid-lock feature
for safety and
convenience.
Electrical**
Ballasts are CBM/ETL Class “P” and are
positively secured by mounting bolts.
Rotor-lock T8 lampholders. Biaxial models
use 2G11 base lampholders with double-
edge wiping action pressure-lock contacts
and horizontally oriented lamp support
clips. 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 spring loaded steel latches and
safety lock T-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***
LAMP CONFIGURATIONS
1-1/2"
[38mm]
23-3/4"
[603mm]
23-15/16" [610mm]
2-7/8" [74mm]
2U1-5/8
23-3/4" [603mm]
3-1/4" [83mm]
10-3/8"
[264mm]
X
X=1-5/8"
[41mm]
X
23-3/4" [603mm]
3-1/4" [83mm]
6"
[152mm]
X
X=5-3/16"
[132mm]
6"
[152mm]
2U6T8
217
23-3/4" [603mm]
3-1/4" [83mm]
10-3/4"
[274mm]
417
23-3/4" [603mm]
3-1/4" [83mm]
X=4-3/16"
[107mm]
Y=4-3/4"
[121mm]
X Y X
MOUNTING DATA
DOOR FRAMES
2GR8
Flat, White
St eel ( White
Latches)
2BX40
23-3/4" [603mm]
3-1/4" [83mm]
X=13/16"
[21mm]
11 "
[280mm]
X
X
Frame/Shielding
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.
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.
1-1/2"
[38mm]
23-3/4"
[603mm]
23-15/16" [610mm]
5-3/4" [146mm]
2-3/4" [70mm]
1"
[26mm]
2-11/16"
[69mm]
2U6T8
2BX40, 2U1-5/8, 217, 417