
FAIL-SAFE
CLEANROOM
SCG 
SCH
34W-160W
Fluorescent
1' x 2', 1' x 4', 2' x 2', 2' x 4' 
SPECIFICATION GRADE 
FLUORESCENT GRID 
1", 1-1/2" or 2" Grid
• Lens is clear extruded with 
prisms positioned inside 
fixture and smooth surface 
on the outside for easy 
cleaning
• Flush mounted, stainless 
steel machine screws
®
The Fail-Safe SCG12, SCG24 
and SCH24 Series are designed 
for use in horizontal or nonlaminar air flow clean rooms 
and features the added 
convenience of field retrofitting 
for flange or grid 
installations.The enclosed and 
gasketed housing and door 
protect against infiltration of 
airborne bacteria. Fixtures 
tested to 100 PSI hose down. 
Higher ratings available 
(consult factory). The mitered 
edges on the door frame and 
the hole-free design of the 
housing prevent air exchange 
between the fixture and 
plenum, allowing relamping 
without contamination of the 
clean areas. An emergency 
battery pack is available as an 
option. Fixtures are U.L. listed 
and C.S.A. standard wet label. 
These luminaires are 
manufactured in accordance 
with U.S.D.A., F.D.A., N.S.F. and 
Federal Standard 209E. The 
SCG12 Series is suitable for use 
in I.E.S. Class 10 (M2.5), 100 (M
3.5), 1,000 (M 4.5), 10,000 (M
5.5) and 100,000 (M 6.5) clean 
room environments.
DIMENSIONSDESCRIPTION
B
MOUNTING
C
AB C
SCG12 5" 11 11/16" 24"  
1'x 2' (127mm) (297mm) (610mm) 
SCG12 5" 11 11/16" 48"  
1'x 4' (127mm) (297mm) (1219mm) 
SCG24 4 1/4"  23 11/16"  24" 
2'x 2' (108mm) (602mm) (610mm) 
SCG24 4 1/4"  23 11/16" 48"  
2'x 4' (108mm) (602mm) (1219mm) 
SCH24 5"  23 3/16" 24"   
2'x 2' (127mm) (589mm) (610mm) 
SCH24 5" 23 3/16" 48"   
2'x 4' (127mm (589mm) (1219mm)
DOOR FRAME
B
Extruded aluminum 
mitered door frame and 
housing trim flange with 
extruded silicone rubber 
perimeter gasketing
A
One piece stainless steel 
door frame and housing 
trim flange with extruded 
closed cell silicone 
perimeter gasketing
• Nominal 4-1/4" (SCG24) or 
5" (SCG12/SCH24) deep 
recessed one-piece 20 ga. 
CRS housing
• Unique, Particulock™ lens 
retention system. Lens is 
hermetically sealed to door 
frame
• Optional extruded 
aluminum, mitered, fully 
gasketed, outside flanged 
door; or one-piece, dieformed stainless steel door 
• Standard Class P, CBM/ETL 
ballast
TM
• MicroSeal
gasketing 
system features silicone 
RTV sealant sealing lens to 
door frame and extruded 
silicone rubber gasketing 
seals door to ceiling. White, 
closed cell Flexiseal™ seals 
fixture to ceiling
• Gasketed access plate with 
two flattened, 7/8" diameter 
knockouts
ORDERING INFORMATION
SAMPLE NUMBER: SCG-24-340-277-IK12-LE3-ALP-GLR
Series 
SCG=Specification
Grade 
Cleanroom Grid 
Type
SCH=Specification
Grade 
Cleanroom 
Heavy Grid Type
Lamp Type
24" Fixture Length 
T8 Fluorescents 
117=(1) 17W Lamp 
217=(2) 17W Lamps 
317=(3) 17W Lamps 
417=(4) 17W Lamps
T12 Fluorescents 
120=(1) 20W Lamp 
220=(2) 20W Lamps 
320=(3) 20W Lamps 
420=(4) 20W Lamps
U Lamps* 
2U 1 5/8=(2)31W T8
Lamps
3U 1 5/8=(3) 31WT8
Lamps
2U6T8=(2) 32WT8 Lamps 
2U6=(2)40WT12Lamps
Width 
12=12" 
24=24"
Biaxial Fluorescents 
140BX=(1) 40W Lamp 
240BX=(2) 40W Lamps 
340BX=(3) 40W Lamps
48" Fixture Length 
T8 Fluorescents 
132=(1) 32W Lamp 
232=(2) 32W Lamps 
332=(3) 32W Lamps 
432=(4) 32W Lamps
T12 Fluorescents 
140=(1) 40W Lamp 
240=(2) 40W Lamps 
340=(3) 40W Lamps 
440=(4) 40W Lamps
Voltage 
120=120V 
277=277V 
347=347V 
UNV=120V
through 
277V
Lens Type 
IK12=K-12
IP12=K-12
KSH25
93=Prismatic
Prismatic 
Acrylic
Prismatic 
Polycarbon 
ate
1
=Bat
Wing 
Distributi 
on
Tempered 
Glass
Ballast 
LE3=Energy
Saving 
Ballast
Electronic
2
Ballast 
EB81=(1) Ballast
for use 
with T8 
Lamp
EB82=(2) Ballasts
for use 
with T8 
Lamp
EB21=(1) Ballast
for use
with T12
Lamp
EB22=(2) Ballasts
for use 
with 
T12Lamp
EBX1=(1) Ballast
for use 
with 
Biaxial 
Lamp
EBX2=(2) Ballasts
for use 
with 
Biaxial 
Lamp
Door/Finish Options 
ALP=Aluminum
Door & Trim, 
Polyester 
Powder Finish
ALX=Extruded
Aluminum 
Door & Trim, 
Clear Anodized 
Finish
ALXP=Extruded
Aluminum 
Door & Trim, 
Polyester 
Powder 
Finish 
(Standard)
Options 
EBP=Emergency
Battery Pack
GLR=Fuse and
Holder
RIF=Radio Frequency
Interference 
Filter
Housing Options 
SHN=Stainless Steel,
Brushed 304 
Finish
SHP=Stainless Steel,
Polyester 
Powder Finish
ALH=Aluminum,
Polyester 
Powder Finish
1488
COOPER LIGHTING
Notes: For additional options, consult your Cooper Lighting Representative. Specifications and Dimensions subject to change without 
notice.
1
The KSH25 provides improved visual performance and wide angle distribution. This lens has an integral prism pattern designed so that
prisms face the lamp cavity and still supply superior photometrics. Highly recommended for all high tech manufacturing environments.
2
For specific electronic ballast, specify brand and catalog number.