
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2003-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 01/21/14. Specifications subject to change without notice.
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AF-6-OPEN-DTT
AF 2/18DTT 6AR
(2) CF18DD/E/835 LAMP, 2500 TOTAL RATED LUMENS, 1.4 S/MH, TEST NO. LTL10964
AF 1/26DTT 6AR
(1) CF26DTT LAMP, 1825 TOTAL RATED LUMENS, 1.4 S/MH, TEST NO. LTL17856
AF 2/26DTT 6MB
(2) CF26DD/E/835 LAMP, 3600 TOTAL RATED LUMENS, 1.2 S/MH, TEST NO. LTL7796
AF 2/26DTT 6BC
(1) CF26DD/E/835 LAMP, 3600 TOTAL RATED LUMENS, 1.2 S/MH, TEST NO. LTL7795
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
6” AF
Open Reflector
Horizontal Lamp, Double Twin-Tube
PHOTOMETRY NOTES
• Tested to current IES and NEMA standards under stabilized laboratory conditions.
• Actual performance may differ as a result of end-user environment and application.
• Consult factory or IES file for microgroove baffle, black cone or other photometric reports.
From 0° cp. Lumens
0° 6520
5° 67966
15° 734 206
25° 658 304
35° 561 339
45° 312 240
55° 38 48
65° 12
75° 00
85° 00
ρ c80% 70%50%
ρw 50% 30%50% 30% 50% 30%
1535152505049
2484647454644
3444143414240
4403740373936
5373437343633
6343134313330
7322831283128
8292629262825
9272427242623
Zone Lumens %lamp
0°-30°576 23.0
0°-40°915 36.6
0°-60° 1203 48.1
0°-90° 1205 48.2
90°-180°0 0.0
0°-180° 1205 48.2*
*Efficiency
50
0%
beam angle 67.9° beam angle 97.6
Initial fc fc at fc at
Mount at beam Beambeam Beam beam
height center diameter edge diameter edge
8' 21.6 7.4' 10.8 12.6
.2
10' 11.6 10.1' 5.817.1' 1.2
12' 7.212.8' 3.621.7' 0.7
14' 4.915.5' 2.526.3' 0.5
16' 3.618.2' 1.830.9' 0.4
150
300
450
600
90
o
45
o
0
o
0° 20°
40°
60°
80°
0
0
AveLumens
0
5
15
25
35
45
55
65
75
85
90
505
506
487
490
441
263
47
5
1
0
0
48
139
225
271
205
56
6
2
0
Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°
90° - 180°
0° - 180°
411.1
681.6
942.4
950.2
0.0
950.2
22.5
37.3
51.6
52.1
0.0
*52.1
*Efficiency
pc 80% 70% 50%
pw 50% 30% 10% 50% 30% 10% 50% 30% 10%
0
1
2
3
4
5
6
7
8
9
10
62
57
52
47
43
39
36
33
30
28
26
62
55
49
44
39
36
32
29
27
24
22
62
54
47
41
37
33
29
27
24
22
20
61
56
51
46
42
39
35
33
30
28
26
61
54
48
43
39
35
32
29
27
24
22
61
53
47
41
37
33
29
26
24
22
20
58
54
49
45
41
38
35
32
29
27
25
58
52
47
42
38
35
31
29
26
24
22
58
51
45
40
36
32
29
26
24
22
20
RCR
50% beam -
68.3°
10% beam -
99.2°
Mounting
Height
Inital FC
Center
Beam Diameter FC DiameterFC
8.0
10.0
12.0
14.0
16.0
16.7
9.0
5.6
3.8
2.8
7.5
10.2
12.9
15.6
18.3
8.3
4.5
2.8
1.9
1.4
12.9
17.6
22.3
27.0
31.7
1.7
0.9
0.6
0.4
0.3
0
o
160
320
480
640
90
o
45
o
From 0° cp. Lumens
0° 762 0
5° 780 74
15° 749 209
25° 635 293
35° 518 323
45° 345 264
55° 65 75
65° 22
75° 00
85° 00
90° 00
ρ c80% 70%50%
ρw50% 30%50% 30% 50% 30%
1383737363635
2343334323331
3312931293028
4292628262826
5262426242523
6242224222321
7222022202219
8211820182018
9191719171916
Zone Lumens %lamp
0°-30° 576 16.0
0°-40° 900 25.0
0°-60° 1239 34.4
0°-90° 1241 34.5
90°-180°0 0.0
0°-180° 1241 34.5*
*Efficiency
50
0%
beam angle 59.4° beam angle 97.4
Initial fc fc at fc at
Mount at beam Beambeam Beam beam
height center diameter edge diameter edge
8' 25.2 6.3' 12.6 12.5' 2.5
10'13.58.5' 6.8 17.1' 1.4
12'8.4 10.8'4.2 21.6' 0.8
14'5.8 13.1'2.9 26.2' 0.6
16'4.2 15.4'2.1 30.7' 0.4
90
o
45
o
0
o
160
320
480
800
From 0° cp. Lumens
0° 764 0
5° 776 74
15° 752 211
25° 645 297
35° 529 329
45° 350 269
55° 69 78
65° 23
75° 00
85° 00
90° 00
ρ c80% 70%50%
ρw50% 30%50% 30% 50%30%
1383738373635
2353334333332
3323031293029
4292729272826
5272426242624
6252224222422
7232022202220
8211821182018
9191719171917
Zone Lumens %lamp
0°-30° 583 16.2
0°-40° 912 25.3
0°-60° 1259 35.0
0°-90° 1262 35.0
90°-180°0 0.0
0°-180° 1262 35.0*
*Efficiency
50
0%
beam angle 60.1° beam angle 97.7
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 25.3 6.4' 12.6 12.6' 2.5
10'13.68.7' 6.8 17.2' 1.4
12'8.5 11.0'4.2 21.7
.8
14'5.8 13.3'2.9 26.3
.6
16'4.2 15.6'2.1 30.9
.4
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