Specification Sheet

LAMP CONFIGURATIONS
COOPER LIGHTING - METALUX
®
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.
23-3/4" [603mm]
3-1/4"
[83mm]
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
228T8 (49), 232 (61)
428T8 (98), 432 (122)
Luminaire Efficacy Rating
LER = FL-82
Catalog Number: 2GR8-232A
Yearly Cost of 1000 lumens,
3000 hrs at .08 KWH = $2.93
Catalog Number: 2GR8-432A
LER = FL-76
Yearly Cost of 1000 lumens,
3000 hrs at .08 KWH = $3.16
*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
228T8, 232
428T8, 432
2' X 4' TROFFER
2 OR 4 LAMP
General Purpose
T8 Commercial Troffer
ADF012707
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
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 spring loaded steel
latches and safety lock T-hinges
provide secure, high quality door
fit and allow hinging and latching
from either side.
23-3/4"
[603mm]
47-15/16" [1218mm]
3-1/2"
[89mm]
1"
[26mm]
1-1/2"
[38mm]
1-1/2"
[38mm]
3-1/8"
[80mm]
Location of Standard
Access Opening
23-3/4" [603mm]
3-1/4" [83mm]
10-3/4"
[274mm]
2 LAMP
4 LAMP
23-3/4" [603mm]
3-1/4" [83mm]
X=4-3/16"
[107mm]
Y=4-3/4"
[121mm]
X Y X
MOUNTING DATA
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.
CEILING COMPATIBILITY
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***
DOOR FRAMES
2GR8
Flat, White
St eel ( White
Latches)