
Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
Incandescent Downlights
10” LGZ
Round Lens
Wet Location
Horizontal A23 Lamp
FEAT URES ORDERING INFORMATION NOTES
OPTICAL SYSTEM
• Aluminum upper reflector coated with highly reflective white paint provides high
efficiency and an evenly illuminated aperture appearance.
• Available with tempered prismatic lens (T73), flat Fresnel lens (FFL) or flat opal
lens (FOL).
• Regressed white door (RW) or stepped black baffle (SB) are available with white
painted flange provided.
• Door is retained by self-aligning, torsion support springs, preventing gaps
between door and ceiling.
MECHANICAL SYSTEM
• 16-gauge galvanized steel mounting/plaster frame with integral yoke to retain
optical system. Maximum 1-1/2” ceiling thickness.
• 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.
• Galvanized steel junction box with hinged access covers and spring latch. Two
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.
EXAMPLE: LGZ 10RW T73
ELECTRICAL SYSTEM
• Galvanized steel lampholder housing.
• Medium-base porcelain socket with nickel-plated screw shell.
• Thermally-activated insulation detector.
LISTING
• Fixtures are UL Listed for thru-branch wiring, non-IC recessed mounting and wet
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
Series1Door frame Lens type Options
LGZ 10RW Regressed white door
10SB Stepped black baffle
T73 Tempered prismatic lens
FFL Flat fresnel lens
FOL Flat opal lens
CP Chicago plenum
2
TRDA
RRL
Tamper resistant door assembly
3
RELOC®-ready luminaire. Provides compatibility with Lithonia RELOC system. Access above
ceiling required.
SDT 277 step-down transformer (277V to 120V)
SDT347 347 step-down transformer (347V to 120V; 75W max.)
GSKT Foam gasketing, ships uninstalled
SF Single fuse
ACCESSORIES order as separate catalog numbers (shipped separately)
SCA10
Sloped ceiling adapter. Degree of slope must be specified (10D, 15D, 20D, 25D, 30D). Ex: SCA10 10D.
ORDERING NOTES
1. Maximum wattage: 200W A23 lamp.
2. Uses Torx T15 rejection pin drive system.
3. For compatible RELOC systems, refer to TECH-110.
LGZ-10-ROUND-LENS
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. 10/01/13. Specifications subject to change without notice.

10” LGZ
Round Lens
Wet Location, Horizontal A23 Lamp
DIMENSIONAL DATA
All dimensions are inches (centimeters) unless otherwise noted.
8-5/8
(21.9)
17-1/4
(43.0)
Aperture: 9-3/4 (24.8)
Ceiling Opening: 10-1/2 (26.7)
Overlap Trim: 11-1/8 (28.3)
17
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. 10/01/13. Specifications subject to change without notice.
LGZ-10-ROUND-LENS
PAGE 2 OF 3

10” LGZ
Round Lens
Wet Location, Horizontal A23 Lamp
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
LGZ 10RW T73
200
400
600
800
0
0° 10° 20° 30°
0
LGZ 10RW FFL
200
400
600
800
0° 10° 20° 30°
0
80°
70°
60°
50°
40°
80°
70°
60°
50°
40°
200W A23 LAMP, 1.2 S/MH, 3800 RATED LUMENS, TEST NO. LTL14179
From 0° AveLumens
0
1101
5
1101
1083
983
729
440
210
96
32
8
0
105
305
449
454
339
192
97
37
9
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
858.8
0° - 30°
1312.6
0° - 40°
1844.0
0° - 60°
1986.3
0° - 90°
90° - 180°
0° - 180°
0.0
1986.3
*E fficiency
*52.3
22.6
34.5
48.5
52.3
0.0
pf
pc
80%70% 50%
pw
50%30% 50%30% 50%30%
.56
1
2
3
4
5
6
7
8
9
10
.51
.46
.42
.38
.35
.32
.30
.27
.25
.55
.48
.42
.38
.34
.31
.28
.26
.24
.22
200W A23 LAMP, 1.0 S/MH, 3800 RATED LUMENS, TEST NO. LTL14180
From 0° AveLumens
0
1365
5
1379
1338
1003
619
383
216
99
33
8
0
132
371
457
390
296
195
100
37
9
15
25
35
45
55
65
75
85
90
Zone Lumens % Lamp
960.9
0° - 30°
1350.8
0° - 40°
1842.2
0° - 60°
1987.7
0° - 90°
90° - 180°
0° - 180°
0.0
1987.7
*E fficiency
*52.3
25.3
35.5
48.5
52.3
0.0
pf
pc
80% 70% 50%
pw
50% 30% 50% 30%50% 30%
1
2
3
4
5
6
7
8
9
10
.57
.51
.46
.42
.39
.36
.33
.31
.28
.27
.55
.48
.43
.39
.35
.32
.29
.27
.25
.23
.55
.50
.45
.41
.37
.34
.32
.29
.27
.25
.55
.50
.46
.42
.38
.35
.33
.30
.28
.26
20%
20%
.54
.47
.42
.37
.34
.31
.28
.25
.23
.22
.54
.48
.43
.38
.35
.32
.29
.27
.25
.23
.53
.48
.44
.40
.36
.33
.31
.29
.26
.25
.53
.48
.44
.40
.37
.34
.32
.30
.28
.26
.52
.46
.41
.37
.33
.30
.27
.25
.23
.21
.52
.46
.42
.37
.34
.31
.29
.26
.24
.23
Mount
height
8
10
12
14
16
Mount
height
8
10
12
14
16
Inital fc
at be am
center
36.4
19.6
12.2
8.3
6.0
Inital fc
at be am
center
45.1
24.3
15.1
10.3
7.5
50% be am angle
60.9°
fc at
beam
Beam
diameter
diameter
edge
18.2
6.5
9.8
8.8
6.1
11.2
4.2
13.5
3.0
15.9
50% be am angle
52.7°
fc at
beam
Beam
edge
22.6
5.4
12.1
7.4
7.6
9.4
5.2
11.4
3.7
13.4
10% be am angle
95.6°
fc at
beam
Beam
diameter
diameter
edge
3.6
12.1
2.0
16.5
1.2
21.0
0.8
25.4
0.6
29.8
10% be am angle
89.8°
fc at
beam
Beam
edge
4.5
11.0
2.4
15.0
1.5
19.0
1.0
22.9
0.7
26.9
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.
LGZ-10-ROUND-LENS
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. 10/01/13. Specifications subject to change without notice.