Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
HID Downlights
4” ATH
T4/T6 Downlight
Ceramic Metal Halide Lamp
FEAT URES ORDERING INFORMATION NOTES
OPTICAL SYSTEM
• Self-flanged semi-specular or matte-diffuse anodized lower reflector. Patented
Bounding Ray™ Optical Principle design (U.S. Patent No. 5,800,050).
Minimum flange matches reflector finish.
• Interchangeable upper reflectors provide narrow, medium and wide distributions.
• 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.
MECHANICAL SYSTEM
• 16-gauge galvanized steel construction; maximum 1-1/2” ceiling thickness.
• Telescopic mounting bars maximum of 32” and minimum of 15”, preinstalled, 4”
vertical adjustment.
• Toolless post-installation adjustments.
• Junction box capacity: 8 (4 in, 4 out) 12AWG rated for 90°C.
• Toolless re-lamp capability from above or below ceiling.
EXAMPLE: ATH T4T 20MHC 4AR N LD 120
ELECTRICAL SYSTEM
• Toolless access door provides access to junction box and ballast through the aperture.
• G12, G8.5 or PGJ5 base ceramic socket.
• Pre-wired, electronic, 120 or 277V ballast module is standard. Assembly can be
attached before or after mounting of mounting/plaster frame.
• Thermally activated insulation detector.
• 30 K lamp ships standard.
LISTING
• Fixtures are UL Listed for thru-branch wiring, non-IC recessed mounting and
damp locations. Listed and labeled to comply with Canadian standards.
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 Ballas t
ATH T4T
T4
T6
1,2
3
20MHC
39MHC
70MHC
4AR Clear
4
4BR
Black
4PR Pewter
N Narrow
M Medium
W Wide
(blank) Semi-specular
LD Matte-diffuse
120
277
347
(blank) Electronic ballast
EMB Electromagnetic ballast
5
4WTR Wheat
Options
6
SF Single fuse
TRW White painted flange
TRBL Black painted flange
L/LP
Less lamp
7
RRC
RELOC®-ready luminaire. Provides compatibility with Lithonia RELOC system. Access
above ceiling required.
CP Chicago plenum
ORDERING NOTES
1. Philips Mini MasterColor® available in 20W or 39W, 120V only.
2. Available with electronic ballast and 120V only.
3. Available in 39W and 70W only.
4. Not available with finishes.
ATH-4-OPEN
PAGE 1 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2006-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 03/24/14. Specifications subject to change without notice.
5. Available with 70W electromagnetic ballast only.
6. Not valid with GRS and GRSTD.
7. For compatible RELOC systems, refer to TECH-110.
4” ATH
Overlap Trim: 5-7/16 (3.8)
T4/T6 Downlight
Ceramic Metal Halide Lamp
DIMENSIONAL DATA
All dimensions are inches (centimeters) unless otherwise noted.
15-9/16
(39.5)
9-13/16
(24.9)
15-3/16
(38.6)
Aperture: 4-3/8 (11.1)
Ceiling Opening: 5-1/16 (12.9)
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2006-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 03/24/14. Specifications subject to change without notice.
ATH-4-OPEN
PAGE 2 OF 3
4” ATH
90°
0
1400
2100
2800
3500
90°
0
1800
3600
5400
7200
9000
90°
0
1000
90°
0
1200
1500
T4/T6 Downlight
Ceramic Metal Halide Lamp
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
ATH 39M T4 4 NARROW
80°
70°
60°
50°
40°
0° 10° 20° 30°
ATH 39M T4 4 MEDIUM
80°
700
0° 10° 20° 30°
70°
60°
50°
40°
CMH39/TC/830/G8.5 T6 LAMP, 3400 RATED LUMENS, 0.4S/MH, TEST NO. LTL14975
From 0° AveLumens
0
9421
5
7683
2876
538
124
53
2
0
1
0
0
638
787
278
83
36
4
1
1
0
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
1702.6
0° - 30°
1785.6
0° - 40°
1825.5
0° - 60°
1827.2
0° - 90°
90° - 180°
0° - 180°
0.0
1827.2
*Efficiency
50.1
52.5
53.7
53.7
0.0
*53.7
pf
pc
80%70% 50%
pw
50%30% 50%30% 50%30%
1
.61
2
.58
3
.55
4
.53
5
.51
6
.49
7
.48
8
.46
9
.45
10
.43
20%
.60
.59
.59
.56
.57
.53
.55
.51
.52
.49
.51
.47
.49
.45
.47
.44
.46
.42
.44
.41
.43
.57
.55
.55
.53
.53
.50
.51
.48
.50
.47
.48
.45
.47
.44
.45
.42
.44
.41
.43
CMH39/TC/830/G8.5 T6 LAMP, 3400 RATED LUMENS, 0.7 S/MH, TEST NO. LTL15313
From 0° AveLumens
0
3582
5
3343
2649
1479
737
159
6
3
1
0
0
310
727
681
457
139
6
2
1
1
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
1717.3
0° - 30°
2174.0
0° - 40°
2319.3
0° - 60°
2323.3
0° - 90°
90° - 180°
0° - 180°
0.0
2323.3
*Efficiency
50.5
63.9
68.2
68.3
0.0
*68.3
pf
pc
80% 70% 50%
pw
50% 30% 50% 30% 50% 30%
1
.76
2
.71
3
.66
4
.62
5
.59
6
.55
7
.52
8
.49
9
.47
10
.44
20%
.74
.74
.73
.68
.70
.63
.65
.59
.62
.55
.58
.51
.55
.48
.52
.45
.49
.43
.46
.41
.44
.72
.67
.68
.62
.64
.58
.60
.54
.57
.51
.54
.48
.51
.45
.48
.43
.46
.40
.44
50% beam angle
20.1°
Beam
diameter
1.9
2.7
3.4
4.1
4.8
50% beam angle
38.8°
Beam
diameter
3.9
5.3
6.7
8.1
9.5
Mount
height
10
12
14
16
Mount
height
8
10
12
14
16
8
Inital fc
at be am
center
311.4
167.5
104.4
71.2
51.7
Inital fc
at be am
center
118.4
63.7
39.7
27.1
19.7
.57
.54
.52
.50
.48
.46
.45
.43
.42
.41
.71
.66
.61
.57
.54
.50
.47
.45
.42
.40
fc at
beam
edge
155.7
83.7
52.2
35.6
25.8
fc at
beam
edge
59.2
31.8
19.8
13.5
9.8
10% beam angle
42.0°
fc at
beam
Beam
edge
diameter
31.1
4.2
16.7
5.8
10.4
7.3
8.8
10.4
10% beam angle
72.2°
fc at
beam
Beam
edge
diameter
11.8
8.0
6.4
10.9
4.0
13.8
2.7
16.8
2.0
19.7
7.1
5.2
ATH 39M T4 4 WIDE
80°
300
600
900
0° 10° 20° 30°
70°
60°
50°
40°
ATH T4 T20M 4 MEDIUM
80°
200
400
600
800
0° 10° 20° 30°
70°
60°
50°
40°
CMH39/TC/830/G8.5 T6 LAMP, 3400 RATED LUMENS, 1.1 S/MH, TEST NO. LTL15260
90° - 180°
0° - 180°
17
6
3
1
Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°
*Efficiency
1216.1
1967.4
2224.9
2235.2
0.0
2235.2
35.8
57.9
65.4
65.7
*65.7
0.0
From 0° AveLumens
0
1577
5
1490
1408
1457
1276
274
14
6
3
1
0
139
401
676
751
241
15
25
35
45
55
65
75
85
90
CDM-TM 20W/830 LAMP, 1500 RATED LUMENS, 0.9 S/MH, TEST NO. LTL15017
From 0° AveLumens
0
1135
5
1056
1037
711
386
64
2
1
1
0
0
99
286
328
233
59
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
0° - 30°
0° - 40°
0° - 60°
0° - 90°
90° - 180°
0° - 180°
3
1
0
0
713.5
946.9
1008.2
1009.6
0.0
1009.6
*Efficiency
47.6
63.1
67.2
67.3
0.0
*67.3
PHOTOMETRY NOTES
• Tested to current IES and NEMA standards under stabilized laboratory condition.
• 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.
ATH-4-OPEN
PAGE 3 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2006-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 03/24/14. Specifications subject to change without notice.
pf
pc
80% 70% 50%
pw
50% 30% 50% 30% 50% 30%
1
.72
2
.67
3
.61
4
.57
5
.52
6
.49
7
.45
8
.42
9
.39
10
.36
pf
pc
80%70% 50%
pw
50%30% 50%30% 50%30%
1
.75
2
.69
3
.65
4
.61
5
.57
6
.53
7
.50
8
.47
9
.44
10
.42
20%
.71
.71
.64
.65
.58
.60
.53
.56
.48
.52
.44
.48
.41
.45
.37
.41
.35
.39
.32
.36
20%
.73
.73
.67
.68
.61
.64
.57
.60
.53
.56
.49
.53
.46
.50
.43
.47
.40
.44
.38
.42
50% beam angle
67.3°
Beam
diameter
7.3
10.0
12.7
15.3
18.0
50% beam angle
48.4°
Beam
diameter
4.9
6.7
8.5
10.3
12.1
.69
.68
.63
.57
.52
.48
.44
.40
.37
.34
.32
.72
.66
.61
.56
.52
.49
.46
.43
.40
.38
.67
.63
.61
.59
.56
.54
.51
.51
.47
.47
.43
.44
.40
.41
.37
.38
.34
.36
.32
.70
.69
.66
.64
.62
.60
.58
.55
.55
.52
.52
.48
.49
.45
.46
.42
.43
.40
.41
.38
Mount
height
8
10
12
14
16
Mount
height
8
10
12
14
16
Inital fc
at be am
center
52.1
28.0
17.5
11.9
8.7
Inital fc
at be am
center
37.5
20.2
12.6
8.6
6.2
fc at
beam
edge
26.1
14.0
8.7
6.0
4.3
fc at
beam
edge
18.8
10.1
6.3
4.3
3.1
10% beam angle
86.8°
fc at
beam
Beam
edge
diameter
diameter
5.2
10.4
2.8
14.2
1.7
18.0
1.2
21.8
0.9
25.6
10% beam angle
78.0°
fc at
beam
Beam
edge
3.8
8.9
2.0
12.1
1.3
15.4
0.9
18.6
0.6
21.9
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