Gotham 4 DTH SpecSheet

Luminaire Type:
Catalog Number
(autopopulated):

Gotham Architectural Downlighting
HID Downlights

4” DTH

T4/T6 Adjustable Accent

Ceramic Metal Halide Lamp

FEAT URES ORDERING INFORMATION NOTES

OPTICAL SYSTEM

• Center Beam optical system centers the lamp relative to the true aperture,
optimizing lamp efficiency.

• Tool-less O°- 40° vertical and 355° horizontal lamp adjustments made with the
trim assembly removed for simple focusing. Lockable adjustment mechanisms
maintain focus during relamping and are visible from below the ceiling with trim
assembly removed.

• Self-flanged, semi-specular or matte-diffuse anodized cone designed to
minimize backflash. Contour cut reduces visibility of inner housing.

• 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.

• Internal housing components painted black.

MECHANICAL SYSTEM

• Black painted housing features tool-less top access and accommodates a
maximum 1-1/2” ceiling thickness.

• Tool-less re-lamp capability from above or below ceiling.

EXAMPLE: DTH T4T 20MHC 4ACT30 N LD 120

• 16-gauge galvanized steel mounting bars with continuos 4” vertical adjustment
are shipped pre-installed. Post installation adjustment possible without the use
of tools above or below ceiling.

• Galvanized steel junction box with hinged access covers and spring latch. Three
combination 1/2”-3/4” and two 1/2” knockouts for straight-through conduit
runs. Capacity: 8 (4 in, 4 out) No. 12 AWG conductors rated for 90°C.

• Secondary housing adjustment system for precise, final ceiling to flange alignment.

ELECTRICAL SYSTEM

• Tool-less 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.

• 3000 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 Wattage/Lamp Aperture/Trim color Typ e Distribution Finish Voltage

DTH T4T

T4
T6

1,2

3

3

20MHC
39MHC
70MHC

9

4AC

Clear

4BC4Black
4PC Pewter

T30

Cut for angles 25°-40°

T20 Cut for angles 15°-25°
T00 Cut for angles 0°-15°

N Narrow
M Medium
W Wide

(blank) Semi-specular

LD Matte-diffuse

120
277
347

5

4WTC Wheat

Ballast Options

(blank) Electronic ballast
EMB Electro-magnetic

ballast

QRS

QRSTD

8

EC

6

Quartz restrike system (uses 100W max. DC base quartz lamp
by others)

7

Quartz restrike system with time delay
Emergency circuit (DC socket with leads for connection to
external emergency power source; 100W max. lamp)

SF

Single fuse

ORDERING NOTES

1. Philips Mini MasterColor® available in 20W & 120V only.

2. Available with electronic ballast and 120V only.

3. Available in 39W and 70W only.

4. Not available with finishes.

5. Available with 70W electro-magnetic ballast only.

DTH-4-ADJ-ACCENT

PAGE 1 OF 3

GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com

© 2006-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 03/24/14. Specifications subject to change without notice.

TRW White painted flange
TRBL Black painted flange
L/LP Less lamp

9

RRL

RELOC®-ready luminaire. Provides compatibility with Lithonia
RELOC system. Access above ceiling required.

CP Chicago plenum

6. Not available with QRSTD.

7. Not available with QRS.

8. Not available with QRS or QRSTD.

9. For compatible RELOC system, refer to TECH-110.

4” DTH

Overlap Trim: 5-7/16 (3.8)

T4/T6 Adjustable Accent

Ceramic Metal Halide Lamp

DIMENSIONAL DATA

All dimensions are inches (centimeters) unless otherwise noted.

15-9/16

(39.5)

15-3/16

(38.6)

Aperture: 4-3/8 (11.1)

9-13/16

(24.9)

Ceiling Opening: 5-1/16 (12.9)

GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com

© 2006-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 03/24/14. Specifications subject to change without notice.

DTH-4-ADJ-ACCENT

PAGE 2 OF 3

T4/T6 Adjustable Accent

0° 10° 20° 30°

90°

1100

2200

3300

4400

5500

1000

1500

2000

2500

0° 10° 20° 30°

90°

1200

1600

2000

0° 10° 20° 30°

90°

1200

1500

1800

4” DTH

Ceramic Metal Halide Lamp

PHOTOMETRY

Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor

DTH T4 39M 4 NARROW

80°

70°

60°

50°

40°

DTH T4 39M 4 MEDIUM

90°

80°

500

0° 10° 20° 30°

70°

60°

50°

40°

CMH39/TC/U/830/G8.5 LAMP, 3400 RATED LUMENS, 0.5 S/MH, TEST NO. LTL15047

From 0° AveLumens

5511

0

4957

5
15
25
35
45
55
65
75
85
90

2538

960
396
231

97
33
18

7
0

432
698
451
253
184

98
34
19

7

Zone Lumens % Lamp

1581.0

0° - 30°

1833.6

0° - 40°

2114.9

0° - 60°

2175.4

0° - 90°

90° - 180°

0° - 180°

0.0

2175.4

*E ciency

*64.0

46.5

53.9

62.2

64.0

0.0

pf
pc

80% 70% 50%

pw

50% 30% 50% 30%50% 30%

.71

1

.66

2

.62

3

.58

4

.54

5
6

.51

7

.49

8

.46
.44

9

.42

10

.69
.63
.58
.54
.51
.48
.45
.43
.41
.39

.69

.65
.61
.57
.54
.51
.48
.46
.44
.42

20%

.68
.62
.58
.54
.50
.47
.45
.43
.41
.39

CMH39/TC/U/830/G8.5 LAMP, 3400 RATED LUMENS, 0.8 S/MH, TEST NO. LTL15364

From 0° AveLumens

2738

0

2722
2578
1516

552
250

81
32
14

5
0

260
706
688
358
190

80
33
15

6

5
15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp

1653.7

0° - 30°

2011.4

0° - 40°

2280.5

0° - 60°

2334.5

0° - 90°

90° - 180°

0° - 180°

0.0

2334.5

*E ciency

*68.7

48.6

59.2

67.1

68.7

0.0

pf
pc

80%70% 50%

pw

50%30% 50%30% 50%30%

1

.76

2

.70

3

.65

4

.61

5

.57

6

.53

7

.50
.47

8

.45

9

.43

10

.74
.67
.62
.57
.53
.49
.46
.43
.41
.38

.74

.69
.64
.60
.56
.53
.50
.47
.45
.42

20%

.73
.66
.61
.56
.52
.49
.46
.43
.41
.38

.67
.63
.59
.56
.53
.50
.48
.45
.43
.42

.71
.67
.62
.59
.55
.52
.49
.46
.44
.42

.66
.61
.57
.53
.50
.47
.44
.42
.40
.39

.70
.65
.60
.55
.52
.48
.45
.43
.40
.38

Mount
height

8
10
12
14
16

Mount
height

8
10
12
14
16

Inital fc
at be am

center

182.2

98.0

61.1

41.7

30.2

Inital fc

at be am

center

90.5

48.7

30.3

20.7

15.0

50% be am angle

26.1°
fc at

beam

Beam

diameter

diameter

edge

91.1

2.6

49.0

3.5

30.5

4.4

20.8

5.3

15.1

6.3

50% be am angle

46.2°
fc at

beam

Beam

edge

45.3

4.7

24.3

6.4

15.2

8.1

10.4

9.8

7.5

11.5

10% be am angle

54.3°

beam

Beam

diameter

5.6

7.7

9.7

11.8

13.8

10% be am angle

71.5°

Beam

diameter

7.9

10.8

13.7

16.6

19.5

fc at

edge

18.2

9.8

6.1

4.2

3.0

fc at

beam

edge

9.1

4.9

3.0

2.1

1.5

DTH-4-ADJ-ACCENT

PAGE 3 OF 3

DTH T4 39M 4 WIDE

80°

400

800

70°

60°

50°

40°

DTH T4T 20M 4 MEDIUM

300

600

900

PHOTOMETRY NOTES

80°

70°

60°

50°

40°

CMH39/TC/U/830/G8.5 LAMP, 3400 RATED LUMENS, 0.9 S/MH, TEST NO. LTL15363

From 0° AveLumens

1872

0

1906
2107
1650

673
269

94
35
16

185
589
735
432
220

94
36
18

6

6
0

5
15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp

1509.3

0° - 30°

1941.7

0° - 40°

2255.5

0° - 60°

2315.6

0° - 90°

90° - 180°

0° - 180°

0.0

2315.6

*E ciency

*68.1

44.4

57.1

66.3

68.1

0.0

pf
pc
pw

1
2
3
4
5
6
7
8
9

10

CDM-TM 20W/830 LAMP, 1500 RATED LUMENS, 0.7 S/MH, TEST NO. LTL15419

From 0° AveLumens

0

1778

5

1746
1480

676
224
117

34
13

6
2
0

166
398
311
146

85
33
13

6
2

15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp

874.8

0° - 30°

1021.2

0° - 40°

1139.0

0° - 60°

1161.2

0° - 90°

90° - 180°

0° - 180°

0.0

1161.2

*E ciency

*77.4

58.3

68.1

75.9

77.4

0.0

pf
pc
pw

1
2
3
4
5
6
7
8
9

10

• 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

© 2006-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 03/24/14. Specifications subject to change without notice.

.73
.66
.60
.55
.51
.47
.43
.40
.38
.36

.84
.77
.71
.66
.61
.58
.54
.51
.49
.46

.73

.68
.63
.58
.54
.51
.47
.44
.42
.39

.84
.78
.74
.69
.65
.61
.58
.55
.53
.50

20%

20%

.72
.65
.59
.54
.50
.46
.43
.40
.38
.35

.82
.76
.70
.65
.61
.57
.54
.51
.48
.46

.71
.66
.61
.57
.53
.50
.46
.44
.41
.39

.81
.76
.72
.67
.64
.60
.57
.54
.52
.49

.69
.63
.58
.53
.49
.46
.43
.40
.37
.35

.80
.74
.69
.64
.60
.57
.53
.51
.48
.46

80% 70%50%

50%30% 50% 30%50% 30%

.75
.69
.64
.59
.55
.51
.48
.45
.42
.40

80%70% 50%

50%30% 50%30% 50% 30%

.86
.80
.75
.70
.66
.62
.59
.56
.53
.50

Mount
height

8
10
12
14
16

Mount
height

10

12

14

16

8

Inital fc
at be am

center

61.9

33.3

20.7

14.2

10.3

Inital fc
at be am

center

58.8

31.6

19.7

13.4

9.8

50% be am angle

55.4°
fc at

beam

Beam

diameter

edge

30.9

5.8

16.6

7.9

10.4

10.0

7.1

12.1

5.1

14.2

50% be am angle

39.8°
fc at

beam

Beam

4.0

5.4

6.9

8.3

9.8

edge

29.4

15.8

9.8

6.7

4.9

diameter

10% be am angle

79.5°
fc at

beam

Beam

diameter

edge

6.2

9.1

3.3

12.5

2.1

15.8

1.4

19.1

1.0

22.4

10% be am angle

64.8°
fc at

beam

Beam

7.0

9.5

12.1

14.6

17.1

edge

5.9

3.2

2.0

1.3

1.0

diameter