Gotham 6 GQ SpecSheet

Luminaire Type:
Catalog Number
(autopopulated):

Gotham Architectural Downlighting
Incandescent Downlights

6” GQ

Ellipsoidal

Open Reflector,
400W or 500W Quartz Halogen T4 Lamp

FEAT URE S ORDERING INFORMATION NOTES

OPTICAL SYSTEM

• Three preset distribution patterns allow designers to achieve various design objectives.

• Clear anodized upper reflector and 6-inch self-flanged, semi-specular, matte-

diffuse or specular finishing trim, provide 50° cut-off, optimal efficiency and
glare control while maintaining a smooth beam pattern that is free of hot spots
and striations.

• Protective lamp guard utilizes clear ceramic technology that reduces UV emis­sions and provides higher heat tolerance and better protection than standard
borosilicate lenses.

MECHANICAL SYSTEM

• One-piece die-cast aluminum housing provides 3 square feet of surface area to
dissipate heat and improve lamp life. Entire housing is coated with black paint
to minimize visibility when installed in open ceiling construction.

• Lamp is accessible from above or below the ceiling without the use of tools. All
hardware is captive.

• 16-gauge painted steel mounting/plaster frame accommodates up to 1-1/2”
thick ceiling materials.

EXAMPLE: GQ 400 M 6AR

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

• Secondary housing adjustment system for precise, final ceiling to luminaire
alignment eliminates trims that protrude into the space.

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

ELECTRICAL SYSTEM

• Heavy-duty mini-can socket for T-4 lamp is integrated into the cast housing for
effective heat dissipation.

• Thermally-activated insulation detector.

LISTING

• Fixtures are UL listed for thru-branch wiring, non-IC recessed mounting and
damp locations. Listed and labeled to comply with Canadian standards.

• Suitable for installation on non-fire resistant material.

WARRANTY

• 1-year limited warranty. Complete warranty terms located at

www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx

Series Lamp wattage1Distribution Aperture/Trim color Finish Options

GQ 400

500

N

Narrow

M Medium
W Wide

6AR Clear

2

6BR

Black

6PR Pewter
6WTR Wheat
6GR Gold

2

6MB

Black baffle

2

6WB

White baffle

(blank) Semi-specular

LD Matte-diffuse
LS Specular

SDT Step down transformer (277V to 120V)
SF Single fuse

3

TRW

White painted flange

TRBL Black painted flange
WLP Lamp (shipped separately)

4

RRL

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

ORDERING NOTES

1. Recommended for use with frosted lamp by Sylvania, GE, Philips or Ushio.

2. Not available with finishes.

3. Standard on 6MB and 6WB.

4. For compatible RELOC systems, refer to TECH-110.

GQ-6-OPEN-400-500

PAGE 1 OF 3

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

© 2005-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 08/06/13. Specifications subject to change without notice.

6” GQ

Overlap Trim: 7-1/2" (19.1)

Ellipsoidal

Open Reflector, 400W or 500W Quartz Halogen T4 Lamp

DIMENSIONAL DATA

All dimensions are inches (centimeters) unless otherwise noted.

17-7/16

(44.3)

13-7/16

(34.1)

19-11/16

(50.0)

Aperture: 6-1/4" (15.9)
Ceiling Opening: 6-7/8" (17.5)

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

© 2005-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 08/06/13. Specifications subject to change without notice.

GQ-6-OPEN-400-500

PAGE 2 OF 3

6” GQ

90˚

10200

13600

17000

pf

20%

10

.45

.42

.45

.41

.44

.41

10500

10

.43

.40

.43

.40

.42

.39

90˚

150

300

450

600

750

pf

20%

Ellipsoidal

Open Reflector, 400W or 500W Quartz Halogen T4 Lamp

PHOTOMETRY

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

GQ 500 N 6AR "NARROW"

80˚

3400

6800

0˚ 10˚ 20˚ 30˚

70˚

60˚

50˚

40˚

GQ 500 M 6AR "MEDIUM"

90˚

80˚

2100

4200

6300

8400

0˚ 10˚ 20˚ 30˚

70˚

60˚

50˚

40˚

(1) 500Q EYX LAMP, 10100 RATED LUMENS, 0.4 S/MH, TEST NO. LTL13662

From 0˚ Ave Lumens

17328

0

11966

5

7261

15

5916

25

774

35

24

45

8

55

3

65

1

75

2

85

0

90

Zone Lumens % Lamp

0˚ - 30˚

1061

0˚ - 40˚

2094

0˚ - 60˚

2629

0˚ - 90˚

687

90˚ - 180˚

20

0˚ - 180˚

7
4
2
1

5784.2

6471.5

6498.4

6504.9

0.0

6504.9

*Efficiency

57.3

64.1

64.3

64.4

0.0

*64.4

pc

80% 70% 50%

pw

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

.71

.72

1

.65

.68

2

.61

.64

3

.57

.60

4

.54

.57

5

.51

.54

6

.48

.52

7

.46

.49

8

.44

.47

9

(1) 500Q EYX LAMP, 10100 RATED LUMENS, 0.8 S/MH, TEST NO. LTL13661

From 0˚ Ave Lumens

10530

0

5
15
25
35
45
55
65
75
85
90

9137
6878
6052

922

28
10

848
1980
2698

914

22

9
3

3

1

1

1

1
0

Zone Lumens% Lamp

0˚ - 30˚

5526.4

0˚ - 40˚

6440.2

0˚ - 60˚

6471.3

0˚ - 90˚

0˚ - 180˚

6476.7

0.0

6476.7

90˚ - 180˚

*Efficiency

54.7

63.8

64.1

64.1

0.0

*64.1

pf
pc

80%70% 50%

pw

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

.70

.71

1

.65

.67

2

.60

.63

3

.56

.59

4

.53

.56

5

.50

.53

6

.47

.50

7

.44

.48

8

.42

.45

9

50% beam angle

20.0˚

Beam

diameter

1.9

2.6

3.3

4.0

4.7

50% beam angle

Mount

height

8
10
12
14
16

Inital fc

at beam

center

572.8

308.1

192.0

131.0

95.1

.71

.65

.67

.60

.63

.57

.60

.54

.57

.51

.54

.48

.51

.46

.49

.43

.47

.63

.65

.59

.61

.56

.58

.53

.56

.50

.53

.48

.50

.45

.48

.43

.46

.67

.68

.69

20%

42.1˚

Mount

height

8
10
12
14
16

Inital fc

at beam

center

348.1

187.2

116.7

79.6

57.8

Beam

diameter

4.2

5.8

7.3

8.9

10.4

.70

.64

.66

.60

.62

.56

.59

.52

.56

.49

.53

.47

.50

.44

.47

.42

.45

.62

.64

.58

.61

.55

.57

.52

.54

.49

.52

.46

.49

.44

.47

.41

.44

.66

.68

.69

fc at
beam
edge

286.5

154.1

96.0

65.5

47.5

fc at

beam
edge

174.0

93.6

58.3

39.8

28.9

10% beam angle

63.2˚
fc at

Beam

6.8

9.2

11.7

14.1

16.6

beam

edge

57.3

30.8

19.2

13.1

diameter

10% beam angle

66.6˚
fc at

Beam

7.2

9.9

12.5

15.1

17.7

beam

edge

34.8

18.7

11.7

8.0

5.8

diameter

9.5

GQ 500 W 6AR "WIDE"

80˚

0

0

0

0

0
0˚ 10˚ 20˚ 30˚

PHOTOMETRY NOTES

• Tested to current IES and NEMA standards under stabilized laboratory conditions.

70˚

60˚

50˚

40˚

(1) 500Q EYX LAMP, 10100 RATED LUMENS, 1.1 S/MH, TEST NO. LTL13660

From 0˚ Ave Lumens

0

7701

5

6970
6440
6138
1188

31
11

684
1853
2734
1121

27

10
4
2
1
0

15
25
35
45
55
65
75
85
90

Zone Lumens % Lamp
0˚ - 30˚
0˚ - 40˚
0˚ - 60˚
0˚ - 90˚

90˚ - 180˚

0˚ - 180˚

4
2
1

5270.8

6391.9

6429.0

6435.9

0.0

6435.9

*Efficiency

52.2

63.3

63.7

63.7

0.0

*63.7

pc
pw

1
2
3
4
5
6
7
8
9

10

• 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.

80%70% 50%

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

.68

.67

.69

.71
.66
.62
.58
.55
.52
.49
.46
.44
.42

.69
.64
.59
.55
.51
.48
.45
.43
.40
.38

.63

.65

.59

.61

.55

.58

.51

.54

.48

.51

.49

.45

.46

.42

.43

.40

.41

.38

.66

.63

.61

.60

.57

.56

.54

.53

.50

.50

.47

.48

.45

.45

.42

.43

.40

.41

.38

Mount

height

8
10
12
14
16

Inital fc

at beam

center

254.6

136.9

85.3

58.2

42.3

50% beam angle

55.7˚
fc at

Beam

5.8

7.9

10.0

12.2

14.3

beam
edge

127.3

68.5

42.7

29.1

21.1

diameter

10% beam angle

69.4˚
fc at

Beam

7.6

10.4

13.2

15.9

18.7

beam
edge

25.5

13.7

8.5

5.8

4.2

diameter

GQ-6-OPEN-400-500

PAGE 3 OF 3

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

© 2005-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 08/06/13. Specifications subject to change without notice.