Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
HID Downlights
12” LAH
Square Lens
T73 Prismatic Lens, Wet Location,
Horizontal Lamp, Metal Halide or HPS Lamps
FEAT URES ORDERING INFORMATION NOTES
OPTICAL SYSTEM
• Diffused anodized aluminum reflector.
• Tempered, prismatic (T73) glass lens.
DOOR
• Die-cast aluminum, gasketed door frame available in flush white or regressed
stepped baffle.
• Self-aligning butterfly door support springs.
MECHANICAL SYSTEM
• Die-formed steel upper housing with white polyester powder paint and formed
steel lower housing with matte black finish.
• Expandable mounting bars provide horizontal and vertical adjustment.
• Galvanized steel junction box with bottom-hinged access covers and spring
latches. Two combination 1/2”-3/4” knockouts and three 1/2” knockouts for
straight-through conduit runs. Capacity: 8 (4 in, 4 out) No. 12 AWG conductors
rated for 90°C.
EXAMPLE: LAH 100M 12FW T73 120
ELECTRICAL SYSTEM
• Horizontally-mounted, mogul-base porcelain socket with nickel-plated screw shell.
• Prewired HPF core-and-coil ballast.
• Thermally-activated insulation detector.
LISTING
• Fixtures are UL listed for thru-branch wiring, 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
Series Wattage/Lamp Door frame Lens type Voltage Options
LAH
Metal halide
100M
M100/C/U/MED
150M1 M1500/C/U
175M M175/C/U
250M2 M250/C/U
Color-corrected metal halide
50MHC MPC50/C/MED
70MHC MPC70/C/MED
100MHC MPC100/C/MED
1
150MHC
MPC150/C/MED
High pressure sodium
70S
LU70/D/MOG
100S LU100/D/MOG
12FW Flush white
12SB Stepped
3
door
black
baffle
T73 Prismatic
lens
FFL Flat Fresnel
lens
120
208
240
277
347
RRL RELOC
TRDA Tamperproof (includes two tamperproof screws)
4
QRS
Quartz Restrike System (uses D.C. base quartz lamp by others; see
4,5
QRSTD
4
EC
SF Single fuse
DF Double fuse (208V and 240V)
6
HEB
EP Encased and potted ballast
SCWA Super CWA pulse start ballast (250W only)
®
-ready luminaire. Provides compatibility with Lithonia
RELOC system. Access above ceiling required.
other side for wattage restrictions)
Quartz Restrike System with time delay
Emergency circuit (D.C. base socket with leads for connection to
external emergency power source; see other side)
Electronic ballast (up to 150W metal malide)
150S LU150/55/MOG
ACCESSORIES order as separate catalog numbers (shipped separately)
BH24 24” steel bar hangers (2) for T-bar mounting.
LSMC Set of 4 T-bar mounting clips for use with bar hangers supplied with unit.(Not for use with BH24).
ORDERING NOTES
1. California Title 20 compliant.
2. 250M available with encased-and-potted ballast; 120, 277 or 347 volts only.
3. Ceramic arc tube consistent-color lamp. Philips MasterColor or GE ConstantColor.
LAH-12-SQUARE-T73
PAGE 1 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2003-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 12/05/13. Specifications subject to change without notice.
4. QRS, QRSTD and EC not available in combination.
5. Luminaire dimensions increase to 24-3/4” x 17-1/2” x 6-5/8”.
6. 120 or 277V only. MHC lamps only.
12” LAH
(33.7)
Square Lens
T73 Prismatic Lens, Wet Location, Horizontal Lamp, Metal Halide or HPS Lamps
DIMENSIONAL DATA ELECTRICAL
All dimensions are inches (centimeters) unless otherwise noted.
7-3/4 (19.7))
24 (61.0)
13-1/4
Aperture:10-1/8 (27.0)
Ceiling opening:12-1/4 (31.1)
Overlap trim:12-5/8 (32.1)
Electrical Characteristics
Wattage/ Maximum Line Current Input
Metal Halide (Power Factor 90%)
100M HX-HPF 2.60 1.50 1.30 1.15 1.00 130
175M CWA 1.80 1.10 .90 .80 .65210
250M CWA 3.05 1.65 1.55 1.25 1.05 294
High Pressure Sodium (Power Factor 90%)
70S HX-HPF 1.45 .85 .75 .65 .52 94
100S HX-HPF 2.20 1.40 1.10 .95 .70 130
150S HX-HPF 3.00 1.65 1.45 1.25 1.00 188
Tested to current IES and NEMA standards under stabilized laboratory conditions. Various
operating factors can cause differences between laboratory data and actual field measurements. Dimensions and specifications are based on the most current available data and are
subject to change.
V802V021tsallaB 240V 277V 347V watts
QRS/EC WATTAGE RESTRICTIONS
HID Maximum Lamp
wattage wattage type
<100W 100
150W 150 Double contact
175W 150 bayonet base
250W 250
Conversion Factor
Use multiplier to determine
candlepower, lumens and
footcandles of other lamps.
100M = 175M X .57
70S = 150S x .40
100S = 150S x .59
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2003-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 12/05/13. Specifications subject to change without notice.
LAH-12-SQUARE-T73
PAGE 2 OF 3
12” LAH
90° 4
ρ f20%
10 23 19 22 19 22 19
%1
°
'1
'5
1400
2100
2800
3500
90° 11
ρ f20%
10 25 21 24 21 24 21
%1
°
'6
'4
'3
1200
2400
3600
4800
6000
%1
°
'8
1000
2000
3000
4000
5000
ρ f20%
10 27 23 26 22 25 22
Square Lens
T73 Prismatic Lens, Wet Location, Horizontal Lamp, Metal Halide or HPS Lamps
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
LAH 175M 12FW T73
90°
700
45°
0°
LAH 250M 12FW T73
90°
45°
0°
From 0° cp. Lumens
From 0° cp. Lumens
15° 5443 1534
25° 4693 2163
35° 3599 2248
45° 2235 1749
55° 1172 1080
65° 580 596
75° 297 317
85° 90 105
175W M175/C/U LAMP, 1.1 S/MH, 12000 RATED LUMENS, TEST NO. 2189020809
Zone Lumens %lamp
0° 3090
5° 3066 292
15° 2898 817
25° 2505 1155
35° 1932 1206
45° 1196 938
55° 628 578
65° 309 317
75° 155 166
85° 46 54
250W M250/C/U LAMP, 1.1 S/MH, 20500 RATED LUMENS, TEST NO. 2189032203
0° 5802
5° 5767 549
0°-30° 2263 18.9
0°-40° 3469 28.9
0°-60° 4985 41.6
0°-90° 5522 46.02
90°-180°0 0.0
0°-180° 5522 46.02*
* Fixture efficiency
Zone Lumens %lamp
0–30° 4245 20.7
0–40° 6493 31.7
0–60° 9323 45.5
0–90° 10341 50.4
90–180°0 0.0
0–180° 10341 50.4*
* Fixture efficiency
ρ c80% 50%30%
ρw50% 30% 50% 30% 50%30%
1504847464544
2454343414240
3413839373836
4383536343533
5353133313230
6322831283027
7292628252725
8272326232523
9252124212321
ρ c 80% 50%30%
ρw 50% 30% 50%30% 50% 30%
1545351504948
2504747454544
3454243414240
4413840373936
5383436333533
6353133303330
7322831273027
8292628252825
9272326232623
50
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 102.2 6.1' 51.1 12.1
10' 54.98.3' 27.5 16.5
12'34.2 10.5'17.121.0' 3.4
14'23.4 12.7'11.725.4' 2.3
16'17.0 14.9' 8.5 29.8' 1.7
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edgediameter edge
8' 191.8 6.1' 95.912.1' 19.2
10' 103.2 8.3' 51.616.5' 10.3
12'64.3 10.5' 32.1 20.9
14'43.9 12.7' 21.9 25.3
16'31.8 14.9' 15.9 29.7
beam angle 57.9° beam angle 96.6
50
beam angle 57.7° beam angle 95.6
0%
0%
0.2
.5
.4
.4
.2
LAH 150S 12FW T73
90°
45°
0°
150W LU150/55/D/MOG LAMP, 1.1 S/MH, 15000 RATED LUMENS, TEST NO. 2189020707
From 0° cp. Lumens
0° 4552
5° 4533 431
15° 4293 1209
25° 3695 1704
35° 2819 1759
45° 1705 1341
55° 890 820
65° 435 447
75° 221 236
85° 66 77
90° 8
Zone Lumens %lamp
0–30° 3344 22.3
0–40° 5103 34.0
0–60° 7264 48.4
0–90° 8024 53.5
90–180°0 0.0
0–180° 8024 53.5*
* Fixture efficiency
ρ c 80% 50%30%
ρw 50% 30% 50%30% 50% 30%
1585654535251
2535050484847
3484546434442
4444142394139
5403739363835
6373336333532
7343033293229
8312730273027
9292528242724
50
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edgediameter edge
8' 150.5 6.1' 75.312.0' 15.1
10' 80.9 8.3' 40.5 16.4
12'50.410.5' 25.2 20.7' 5.0
14'34.412.7' 17.2 25.1' 3.4
16'25.014.9' 12.5 29.5' 2.5
beam angle 57.9° beam angle 96.0
0%
.1
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.
LAH-12-SQUARE-T73
PAGE 3 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2003-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 12/05/13. Specifications subject to change without notice.
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