Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
Incandescent Downlights
6” GQT
Ellipsoidal Tilt
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.
• Compound contour finishing trim optimizes efficiency, improves beam symmetry
and visual comfort, regardless of vertical position.
• Protective lamp guard utilizes clear ceramic technology that reduces UV emissions and provides higher heat tolerance and better protection than standard
borosilicate lenses.
• Center Beam optical system centers the lamp relative to the aperture, optimizing luminaire efficiency.
MECHANICAL SYSTEM
• One-piece die-cast aluminum housing provides 3 square feet of surface area to
dissipate heat. Entire housing is coated with black paint to minimize visibility
when installed in open ceiling construction.
• Tool-less, lockable 0° – 30° continuous vertical aiming appropriate for sloped
ceilings or applications requiring projection of the beam beyond nadir. Not
recommended for straight downlight applications. Full 360° horizontal adjustment assures complete coverage.
EXAMPLE: GQT 500 M 6AR
• 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.
• 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 one1/2" 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
GQT 400
500
N
Narrow
M Medium
W Wide
6AR Clear
2
6BR
Black
6PR Pewter
6WTR Wheat
6GR Gold
2
6WR
White
(blank) Semi-specular
LD Matte-diffuse
LS Specular
SDT Step down transformer (277V to 120V)
SF Single fuse
TRW White painted flange
TRBL Black painted flange
WLP Lamp (shipped separately)
3
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. For compatible RELOC systems, refer to TECH-110.
GQT-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. 07/29/13. Specifications subject to change without notice.
6” GQT
17-7/16
19-11/16
Overlap Trim: 7-1/2" (19.1)
Ellipsoidal Tilt
Open Reflector, 400W or 500W Quartz Halogen T4 Lamp
DIMENSIONAL DATA
All dimensions are inches (centimeters) unless otherwise noted.
(44.3)
14-5/8
(37.1)
(50.0)
Aperture:
Ceiling Opening:
6-1/4" (15.9)
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. 07/29/13. Specifications subject to change without notice.
GQT-6-OPEN-400-500
PAGE 2 OF 3
6” GQT
Zone Lumens% Lamp
0˚ - 30˚
0˚ - 40˚
0˚ - 60˚
0˚ - 90˚
90˚ - 180˚
0˚ - 180˚
2714.6
2811.9
2828.9
2831.7
0.0
2831.7
56.0
58.0
58.3
58.4
0.0
*58.4
*Efficiency
0˚ 10˚ 20˚ 30˚
40˚
50˚
60˚
70˚
80˚
90˚
2000
4000
6000
8000
10000
pf
pc
pw
20%
80% 70% 50%
50%30% 50%30% 50% 30%
1
2
3
4
5
6
7
8
9
10
.66
.62
.59
.56
.54
.51
.49
.47
.46
.44
.64
.60
.57
.54
.51
.49
.47
.45
.43
.41
.64
.61
.58
.56
.53
.51
.49
.47
.45
.44
.63
.59
.56
.53
.51
.48
.46
.45
.43
.41
.62
.59
.57
.54
.52
.50
.48
.47
.45
.43
.61
.58
.55
.52
.50
.48
.46
.44
.43
.41
From 0˚ Ave Lumens
0
5
15
25
35
45
55
65
75
85
90
10027
7617
4045
2250
62
24
1
1
1
1
0
655
1127
933
97
15
2
1
1
1
50% beam angle
20.3˚
10% beam angle
55.5˚
Mount
height
Inital fc
at beam
center
Beam
diameter
fc at
beam
edge
Beam
diameter
fc at
beam
edge
8
10
12
14
16
331.5
178.3
111.1
75.8
55.0
2.0
2.7
3.4
4.1
4.8
165.7
89.1
55.6
37.9
27.5
5.8
7.9
10.0
12.1
14.2
33.1
17.8
11.1
7.6
5.5
Zone Lumens % Lamp
0˚ - 30˚
0˚ - 40˚
0˚ - 60˚
0˚ - 90˚
90˚ - 180˚
0˚ - 180˚
2664.6
2796.5
2815.5
2818.2
0.0
2818.2
54.9
57.7
58.1
58.1
0.0
*58.1
*Efficiency
0˚ 10˚ 20˚ 30˚
40˚
50˚
60˚
70˚
80˚
90˚
1100
2200
3300
4400
5500
pf
pc
pw
20%
80% 70% 50%
50%30% 50%30% 50% 30%
1
2
3
4
5
6
7
8
9
10
.65
.61
.58
.55
.53
.50
.48
.46
.44
.42
.64
.59
.56
.53
.50
.47
.45
.43
.41
.39
.64
.60
.57
.55
.52
.50
.48
.46
.44
.42
.63
.59
.55
.52
.50
.47
.45
.43
.41
.39
.62
.59
.56
.54
.51
.49
.47
.45
.43
.42
.61
.57
.54
.51
.49
.47
.45
.43
.41
.39
From 0˚ Ave Lumens
0
5
15
25
35
45
55
65
75
85
90
5911
5744
3875
2466
111
26
4
0
1
0
0
521
1092
1052
132
16
3
1
1
1
50% beam angle
36.4˚
10% beam angle
60.2˚
Mount
height
Inital fc
at beam
center
Beam
diameter
fc at
beam
edge
Beam
diameter
fc at
beam
edge
8
10
12
14
16
195.4
105.1
65.5
44.7
32.4
3.6
4.9
6.3
7.6
8.9
97.7
52.5
32.8
22.3
16.2
6.4
8.7
11.0
13.3
15.7
19.6
10.5
6.6
4.5
3.2
Zone Lumens% Lamp
0˚ - 30˚
0˚ - 40˚
0˚ - 60˚
0˚ - 90˚
90˚ - 180˚
0˚ - 180˚
2652.7
2799.1
2817.8
2821.4
0.0
2821.4
54.7
57.7
58.1
58.2
0.0
*58.2
*Efficiency
0˚ 10˚ 20˚ 30˚
40˚
50˚
60˚
70˚
80˚
90˚
1000
2000
3000
4000
5000
pf
pc
pw
20%
80% 70% 50%
50% 30% 50% 30% 50% 30%
1
2
3
4
5
6
7
8
9
10
.65
.61
.58
.55
.52
.50
.48
.46
.44
.42
.64
.59
.56
.52
.50
.47
.45
.43
.41
.39
.64
.60
.57
.55
.52
.50
.47
.45
.43
.42
.63
.59
.55
.52
.49
.47
.45
.43
.41
.39
.62
.59
.56
.53
.51
.49
.47
.45
.43
.41
.61
.57
.54
.51
.49
.46
.44
.42
.40
.39
From 0˚ Ave Lumens
0
5
15
25
35
45
55
65
75
85
90
5113
5271
3822
2524
131
25
3
2
0
0
0
486
1078
1088
146
16
3
1
1
1
50% beam angle
41.2˚
10% beam angle
61.4˚
Mount
height
Inital fc
at beam
center
Beam
diameter
fc at
beam
edge
Beam
diameter
fc at
beam
edge
8
10
12
14
16
169.0
90.9
56.7
38.7
28.1
4.1
5.6
7.1
8.7
10.2
84.5
45.5
28.3
19.3
14.0
6.5
8.9
11.3
13.6
16.0
16.9
9.1
5.7
3.9
2.8
Ellipsoidal Tilt
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
GQT 500 N 6AR "NARROW"
GQT 500 M 6AR "MEDIUM"
(1) 500Q EYX LAMP, 10100 RATED LUMENS, 0.5 S/MH, TEST NO. LTL13431
(1) 500Q EYX LAMP, 10100 RATED LUMENS, 0.7 S/MH, TEST NO. LTL13430
GQT 500 W 6AR "WIDE"
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.
GQT-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. 07/29/13. Specifications subject to change without notice.
(1) 500Q EYX LAMP, 10100 RATED LUMENS, 0.8 S/MH, TEST NO. LTL13429
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