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1. Housing: Extruded
aluminum. Die-cast
end plate mechani-
cally attached with no
exposed fasteners.
2. Lamping: One T5 (28
or 54 watt as speci-
fied) fluorescent lamp.
Provided by others.
3. Reflector: Die-formed
specular aluminum
reflector.
4. Shielding: Die-formed
perforated CRS.
5. Diffuser: Translucent
acrylic diffuser.
6. Louver: Straight blade
louver finished to
match housing.
Luminaire Lengths:
Individual–46 3/4" and
94 3/4". Joiner–48" and 96".
Lighting Systems
1
3
4
2
5
6
4 1/4"
2 3/4"
Coefficients of
Utilization
% Wall Reflectance
70 50 30
0 63 63 63
1 58 55 53
2 54 50 46
3 50 45 41
4 46 40 36
5 43 36 32
6 40 33 29
7 37 30 26
8 34 28 23
9 32 25 21
10 29 22 18
80% Effective Ceiling
Cavity Reflectance
20% Floor Cavity
Reflectance
How to Specify
Finish
Series SG White Aluminum
28 watt SG-28-WH SG-28-AL
54 watt SG-54-WH SG-54-AL
Please refer to the flap at the back of the
brochure for complete ordering instructions.
Room Cavity Ratio
55% efficiency
1 lamp F28T5
Report No. LRL299-1M
83% Direct
17% Indirect
2,000
700
500
400
200
FOOTCANDLE
20 30 50 70 100
1 2 3 4 5 7 10 20 30 4050 70 100 200
ROOM AREA IN SQUARE FEET
NUMBER OF FIXTURES REQUIRED
300
1,000
100
1. Find room area on
vertical axis.
2. Move across chart to
footcandle curve.
3. Move down to hori-
zontal axis and read
number of luminaires
required.
SH 2-Lamp T5 Luminous Direct
1
3
4
2
5
6
5 3/4"
5 7/16"
SG 1-Lamp T5 Luminous Direct
90˚
85˚
95˚
105˚
75˚
65˚
55˚
115˚
125˚
180˚ 175˚ 165˚ 155˚ 145˚ 135˚
0˚ 5˚ 15˚ 25˚ 35˚ 45˚
500
750
250
1000
1250
0
250
90º
0º
Coefficients of
Utilization
% Wall Reflectance
70 50 30
0 63 63 63
1 58 56 54
2 54 50 47
3 50 45 42
4 46 41 37
5 43 37 33
6 40 34 30
7 37 31 27
8 35 28 24
9 32 26 22
10 29 23 19
80% Effective Ceiling
Cavity Reflectance
20% Floor Cavity
Reflectance
Room Cavity Ratio
54.3% efficiency
2 lamp F28T5
Report No. LRL299-1C
85% Direct
15% Indirect
2,000
700
500
400
200
FOOTCANDLE
20 30 50 70 100
1 2 3 4 5 7 10 20 30 4050 70 100 200
ROOM AREA IN SQUARE FEET
NUMBER OF FIXTURES REQUIRED
300
1,000
100
1. Find room area on
vertical axis.
2. Move across chart to
footcandle curve.
3. Move down to hori-
zontal axis and read
number of luminaires
required.
1. Housing: Extruded
aluminum. Die-cast
end plate mechani-
cally attached with no
exposed fasteners.
2. Lamping: Two T5 (28
or 54 watt as speci-
fied) fluorescent
lamps. Provided by
others.
3. Reflector: Die-formed
specular aluminum
reflector.
4. Shielding: Die-formed
perforated CRS.
5. Diffuser: Translucent
acrylic diffuser.
6. Louver: Straight blade
louver finished to
match housing.
Luminaire Lengths:
Individual–46 3/4" and
94 3/4". Joiner–48" and 96".
SG
SH Joiner
SG Joiner
Softly glowing, well-shielded direct
lighting provides generous
illumination for task
environments.
Direct – SG, SH
SH
Run End Detail
For complete specifications see
individual specification sheets.
For complete specifications see
individual specification sheets.
90˚
85˚
95˚
105˚
75˚
65˚
55˚
115˚
125˚
180˚ 175˚ 165˚ 155˚ 145˚ 135˚
0˚ 5˚ 15˚ 25˚ 35˚ 45˚
250
375
125
500
625
0
90˚
0˚
How to Specify
Finish
Series SH White Aluminum
28 watt SH-28-WH SH-28-AL
54 watt SH-54-WH SH-54-AL
Please refer to the flap at the back of the
brochure for complete ordering instructions.
13
Available in one and
two lamp versions.
Silhouette Direct
functions well in
work spaces,
retail stores
or libraries.