Cut Sheet
2RT8S Volumetric Recessed Lighting 2' x 4'
Sheet #: 2RT8S-2x4
©2010 Acuity Brands Lighting, Inc. All rights reserved. Rev. 9/27/10
MOUNTING DATA
Continuous row mounting of flanged units requires CRE and CRM trim
options (see Options).
NOTES:
1 Recommended rough-in dimensions for F-trim fixtures 24"x48" (Tolerance is +1/4"-0").
Swing-gate range 1-3/16" to 3-15/16". Swing-gate span 23-3/8" to 26-11/16". Fixture
swing-gate points require additional 1-1/16" over nominal fixture height.
T8 Energy Comparison
System Lamp Ballast Input Watts Saved
Type Factor Watts Compared to 3 lamp T8
3-lamp T8 Parabolic F32T8 0.88 85 –
2RT8S 2-lamp BINP T8 F32T8 0.88 55 30
2RT8S 2-lamp BILP T8 F32T8 0.78 48 37
*The LER (Luminaire Efficacy Rating) is the lumens per watt rating for this fixture. It is used to compare the energy efficiency of various products. This photometric report is based
upon IES testing procedures, as stated in LM-41-1998.
PHOTOMETRICS
2RT8S 2 32, (3) FO32 lamps, 2800 lumens per lamp, s/m 1.28 (along) 1.4 (across), test no. LTL18481
0° 20°
40°
60°
80°
90°
0°0°0° 90°
180°
300
600
900
1200
1500
Coefficients of Utilization
pf 20%
pc 80% 70% 50%
pw 70%50%30% 50%30%10% 50%30%10%
96
88
80
73
67
61
56
52
49
45
42
96
84
73
64
57
51
46
41
38
34
32
96
81
68
58
50
43
38
34
31
28
25
94
82
72
63
56
50
45
41
37
34
31
94
79
67
57
49
43
38
34
30
28
25
94
77
63
52
44
38
33
29
26
23
21
90
79
69
61
54
48
43
39
36
33
30
90
77
65
56
48
42
37
33
30
27
25
90
74
61
51
44
37
33
29
26
23
21
RCR
0
1
2
3
4
5
6
7
8
9
10
Zonal Lumen Summary
Zone Lumens % Lamp % Fixture
0° - 30°
0° - 40°
0° - 60°
0° - 90°
90° - 180°
0° - 180°
1198
1997
3630
4515
0
4515
21.4
35.7
64.8
80.6
0.0
80.6
26.5
44.2
80.4
100.0
0.0
100.0
Efficiency: 80.6%
CP Summary
0° 90
0°
5°
15°
25°
35°
45°
55°
65°
75°
85°
90
1490
1507
1459
1362
1198
975
707
438
205
35
0
1490
1464
1461
1430
1352
1215
1017
648
208
20
0
Lithonia Lighting
Fluorescent
One Lithonia Way, Conyers, GA 30012
Phone: 800-858-7763 Fax: 770-929-8789
www.lithonia.com