Page 1
Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
HID Surface Downlights
8” CTH
Enclosed Wet Location Cylinder
T4/T6 Ceramic Metal Halide,
6” Aperture
FEAT URES ORDERING INFORMATION NOTES
OPTICAL SYSTEM
• Self-flanged, semi-specular or matte-diffuse anodized lower reflector. Optically
designed to provide 40° cutoff for optimal efficiency and glare control.
• Interchangeable upper reflectors provide narrow, medium and wide distributions. These preset distribution patterns allow designers to achieve various
design objectives.
• 1/8” thick softening lens eliminates beam striations and ensures maximum
efficiency. Provides required protective shielding.
• Optical system retained by self-aligning torsion support springs.
HOUSING
• Heavy gauge, aluminum housing with top deck for clean appearance. Provided
with safety chain on ceiling and pendant units allowing hands-free wiring
connections. Matte white textured polyester powder paint finish standard.
MOUNTING
• Ceiling mount provided with mounting pattern for direct installation to 3-1/4”
and 4” octagonal or 4” square junction box.
EXAMPLE: CTH8 T6 70MHC 6AR N MVOLT DWHG
• Wall mount provided with mounting pattern for direct installation to 4” square
or octagonal junction box.
• Pendant mount entry provided for 3/8” National Pipe Thread stem. Additional
pendant options available (see accessories). Wires supplied by others.
ELECTRICAL SYSTEM
• G12 (T6) or G8.5 (T4) base ceramic socket.
• Pre-wired, electronic, 120 or 277V ballast module is standard.
• 3000 K lamp ships standard.
LISTING
• Fixtures are listed and labeled to comply with US and Canadian standards. Wall
mount suitable for wet locations. Ceiling and pendant mount suitable for wet
locations in covered ceiling installations only.
WARRANTY
• 1-year limited warranty. Complete warranty terms located at
www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx
Series Lamp type Lamp wattage Aperture/Trim color Distribution Finish Voltage Mounting
CTH8 T4
39MHC
T6
70MHC
6AR Clear
6PR Pewter
6WTR Wheat
N
Narrow
M Medium
W Wide
6WR White
(blank) Semi-specular
LD Matte-diffuse
MVOLT
120
277
347
FCM Ceiling mount
WM Wall mount
2
PM
1
Pendant 3/8” thread mount
6BR Black
Options
3
SF
QRS
QRSTD
EC
Single fuse
4
Quartz restrike system
4
QRS with time delay
5
Emergency circuit
L/LP Less lamp
Architectural Colors - Powder Paint
DWHG Matte white (standard)
DDB
Dark bronze
DBL Black
DWH Gloss white
DMB Medium bronze
6
DNA
Natural aluminum
DSS Sandstone
DGC Charcoal grey
DTG Tennis green
DBR Bright red
DSB Steel blue
ACCESSORIES order as separate catalog numbers (shipped separately)
7
CYS
CRS
3/8” stem and canopy with 5° “hang straight” swivel
7
3/8” stem and canopy with 45° swivel
ORDERING NOTES
1. Wires supplied by others .
2. Stem not included.
3. Must specify 120 or 277V.
4. Not available with EC.
5. Not available with QRS or QRSTD.
CTH-8-LENSED
PAGE 1 OF 4
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 12/02/13. Specifications subject to change without notice.
6. Additional architectural colors available; see www.lithonia.com/archcolors.
7. Color and length of stem must be specified (from 6” to 240” in even increments in maximum sections of 48”). Ex.: CYS06 DWHG. Ceiling attachment for
interior use. Consult factory for exterior use. Wire not included.
Page 2
8” CTH
Aperture:6
(15.8)
Housing
(19.4)
Housing Height: 17-3/8 (44.1)
C: 7-5/8 (19.4)
Wall Mount Bracket
holes
(8.6)
Enclosed Wet Location Cylinder
T4/T6 Ceramic Metal Halide, 6” Aperture
DIMENSIONAL DATA
All dimensions are inches (centimeters) unless otherwise noted.
A
3-3/8
(8.6)
B
3-3/8
CTH8 WM
Clearance
for 3/8" (.95)
anchors
C
Diameter: 7-5/8
-1/4
A: 8-1/8 (20.7)
B: 17-3/8 (44.1)
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 12/02/13. Specifications subject to change without notice.
CTH-8-LENSED
PAGE 2 OF 4
Page 3
8” CTH
1200
1800
2400
3000
%02fp
1100
2200
3300
4400
5500
%02fp
3
4
0° 20°
11500
%02fp
Enclosed Wet Location Cylinder
T4/T6 Ceramic Metal Halide, 6” Aperture
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
CTH8 T6 39MHC 6AR M
180°
90°
80°
600
60°
40°
0° 20°
CTH8 T6 70MHC 6AR M
180°
90°
80°
60°
40°
0° 20°
CMH39/T/U/830 LAMP, 0.8 S/MH, 3400 RATED LUMENS, TEST NO. LTL15378
Ave Lumens
0°
3369
5°
3033
15°
2667
25°
1501
35°
717
45°
150
55°
65°
75°
85°
90
Zone Lumens % Lamp
0° - 30°
1697
0° - 40°
0° - 60°
0° - 90°
2145
2288
2292
2292
0
283
723
691
90° - 180°
448
0° - 180°
136
7
7
3
3
2
1
0
0
0
pc 80% 70%50%
pw 50% 30% 10%50% 30%10% 50% 30%10%
49.9
63.1
67.3
67.4
0.0
67.4
80
80
0
1
2
3
4
5
6
7
8
9
10
80
75
73
72
70
67
65
65
62
60
61
58
55
58
54
51
54
50
48
51
47
45
48
45
42
46
42
39
44
40
37
CMH70/T/U/942 LAMP, 0.8 S/MH, 6400 RATED LUMENS, TEST NO. LTL15392
Ave Lumens
0°
5828
5°
5395
15°
4744
25°
2923
35°
1405
45°
274
55°
15
65°
75°
85°
90
Zone Lumens% Lamp
0° - 30°
3139
0° - 40°
0° - 60°
0° - 90°
4014
4279
4287
0
4287
500
1299
1340
90° - 180°
875
0° - 180°
251
14
4
5
2
2
1
1
0
pc 80%70% 50%
pw 50%30% 10%50% 30%10% 50% 30% 10%
49.0
62.7
66.9
67.0
0.0
67.0
80
80
0
1
2
3
4
5
6
7
8
9
10
80
74
73
71
69
67
65
65
62
59
61
57
54
57
53
50
54
50
47
51
47
44
48
44
41
45
41
39
43
39
36
78
78
78
75
75
73
72
71
69
66
64
64
62
59
61
57
55
57
53
51
54
50
47
51
47
44
48
44
42
46
42
39
43
40
37
78
78
78
73
71
70
68
66
64
64
61
59
60
57
54
56
53
50
53
49
47
50
46
44
47
44
41
45
41
39
43
39
36
75
71
70
68
67
65
63
63
60
58
59
56
54
56
53
50
53
50
47
50
47
44
47
44
42
45
42
39
43
39
37
74
74
74
70
69
68
66
64
62
62
60
58
59
56
53
55
52
50
52
49
46
49
46
44
47
43
41
44
41
38
42
39
36
Mounting
Height
8.0
10.0
12.0
14.0
16.0
Mounting
Height
8.0
10.0
12.0
14.0
16.0
Inital FC
50% beam
Center
Diameter FC Diameter FC
Beam
111.4
4.1
59.9
5.6
37.3
7.1
25.5
8.6
18.5
10.1
Inital FC
50% beam
Center
Diameter FC Diameter FC
Beam
4.4
192.7
6.0
103.6
7.5
64.6
9.1
44.1
10.7
32.0
41.2°
43.3°
55.7
30.0
18.7
12.7
9.2
96.3
51.8
32.3
22.0
16.0
10% beam
72.8°
8.1
11.1
14.0
17.0
19.9
10% beam
74.5°
8.4
11.4
14.4
17.5
20.5
11.1
6.0
3.7
2.5
1.8
19.
10.
6.5
4.4
3.2
CTH8 T6 70MHC 6AR N
180°
90°
2300
4600
6900
9200
80°
60°
40°
CMH70/T/U/942 LAMP, 0.5 S/MH, 6400 RATED LUMENS, TEST NO. LTL15371
Ave Lumens
0°
11970
5°
10682
15°
5829
25°
2151
35°
45°
55°
65°
75°
85°
90
671
138
Zone Lumens % Lamp
0° - 30°
3546
0° - 40°
0° - 60°
0° - 90°
0° - 180°
3982
4110
4116
4116
0
936
1597
1012
90° - 180°
436
119
8
9
3
4
1
2
0
1
0
pc 80% 70% 50%
pw 50% 30% 10% 50% 30%10% 50% 30% 10%
55.4
62.2
64.2
64.3
0.0
64.3
77
0
1
2
3
4
5
6
7
8
9
10
77
72
71
68
66
64
62
61
58
58
55
56
52
53
50
51
48
49
46
47
44
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.
CTH-8-LENSED
PAGE 3 OF 4
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 12/02/13. Specifications subject to change without notice.
77
75
75
75
71
71
69
71
69
64
60
56
53
50
48
46
44
42
68
67
65
63
64
61
59
60
58
56
58
55
53
55
52
50
53
50
48
51
48
45
49
46
44
47
44
42
71
68
67
66
65
63
62
62
59
57
54
52
50
48
46
Mounting
60
58
Height
57
55
54
52
49
47
45
44
8.0
52
10.0
50
12.0
47
14.0
45
16.0
43
42
50% beam
Inital FC
Center
Beam
395.7
212.8
132.6
90.5
65.7
27.1°
Diameter FC Diameter FC
2.6
3.6
4.6
5.5
6.5
197.9
106.4
66.3
45.3
32.8
10% beam
541°
5.6
7.7
9.7
11.8
13.8
39.6
21.3
13.3
9.0
6.6
Page 4
8” CTH
1000
1500
2000
2500
3000
%02fp
rF
Enclosed Wet Location Cylinder
T4/T6 Ceramic Metal Halide, 6” Aperture
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
CTH8 T6 70MHC 6AR W
180°
90°
80°
500
60°
40°
0° 20°
CMH70/T/U/942 LAMP, 1.3 S/MH, 6400 RATED LUMENS, TEST NO. LTL15179
AveLumens
0°
2966
5°
2783
15°
2726
25°
2957
35°
2448
45°
427
55°
65°
75°
85°
90
Zone Lumens % Lamp
0° - 30°
2383
0° - 40°
0° - 60°
0° - 90°
0° - 180°
3838
4279
4299
0
4299
262
773
1348
90° - 180°
1455
413
27
27
12
12
6
6
1
2
0
pc 80% 70% 50%
pw 50% 30% 10% 50% 30% 10% 50% 30% 10%
37.2
60.0
66.9
67.2
0.0
67.2
80
80
0
1
2
3
4
5
6
7
8
9
10
80
74
72
70
68
65
63
63
59
56
58
54
51
54
49
46
50
45
42
46
42
39
43
38
35
40
36
33
37
33
30
78
78
78
75
75
72
71
69
67
64
62
62
59
56
57
53
51
53
49
46
49
45
42
46
41
38
43
38
35
40
35
33
37
33
30
75
70
68
67
65
63
61
60
57
55
56
52
50
52
48
46
48
44
42
45
41
38
42
38
35
39
35
32
36
33
30
Mounting
Height
8.0
10.0
12.0
14.0
16.0
Inital FC
50% beam
Center
Diameter FC Diamete
Beam
7.4
98.0
10.1
52.7
12.7
32.9
15.4
22.4
18.1
16.3
67.7°
49.0
26.4
16.4
11.2
8.1
10% beam
86.2°
10.3
14.0
17.8
21.5
25.3
9.8
5.3
3.3
2.2
1.6
C
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.
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 12/02/13. Specifications subject to change without notice.
CTH-8-LENSED
PAGE 4 OF 4
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