Page 1
Luminaire Type:
Catalog Number
(autopopulated):
Gotham Architectural Downlighting
Compact Fluorescent Downlights
12” LAF
Square Lens
Wet Location, Horizontal Lamp
Double Twin-Tube or Triple-Tube
FEAT URE S ORDERING INFORMATION
OPTICAL SYSTEM
• Diffused anodized aluminum reflector.
• Available with tempered prismatic lens (T73), flat Fresnel lens (FFL), flat
Holophane lens (FHL), or drop Holophane lens (DHL).
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 hinged access covers and spring latch. Two
combination 1/2”- 3/4” knockouts and two 1/2” knockouts for straightthrough
conduit runs. Capacity: 8 (4 in, 4 out) No.12 AWG conductors rated for 90°C.
• Patented adjustable aperture allows 1/4” adjustments in all directions and up
to 5° of rotation, allowing post-installation adjustments to ensure trim-to-trim
alignment.
EXAMPLE: LAF 2/32TRT 12FW T73 MVOLT
Wattage/
Series
LAF
Lamp Door frame Lens type Voltage Ballast
1
1/18DTT
1/26DTT
1/26TRT
1/32TRT
1/42TRT
2/18DTT
12FW Flush white
door
12SB Stepped
black baffle
12SW Stepped
white baffle
2/26DTT
2/26TRT
2/32TRT
2/42TRT
T73 Tempered
prismatic
lens
FHL Flat
Holophane
lens
DHL Drop
Holophane
lens
FFL Flat Fresnel
lens
MVOLT
120
277
347
1
ELECTRICAL SYSTEM
• Horizontally-mounted, positive latch thermoplastic sockets.
• Class P, thermally-protected, high power factor ballasts mounted to the
junction box.
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
2
ECOS EcoSystem electronic
dimming ballast.
Minimum dimming
level 5%.
3
ADEZ
Advance Mark 10
electronic dimming
ballast. Minimum
dimming level 5%
Options
DS Dual switching
ELR4Emergency battery pack with remote test switch
3
GMF
GLR
®
WLP With 3500 K lamp (shipped separately)
TRDA Tamper-resistant door assembly
BDP
NEPP
Single, slow-blow fuse
3
Single, fast-blow fuse
5
Ballast disconnect plug
6
Interface for Sensor Switch® nLight® network
provided with integral power supply. Refer to
TN-623-01.
RRL__
RELOC®-ready luminaire connectors enable a
simple and consistent factory installed option
across all ABL luminaire brands. Refer to RRL
for complete nomenclature.
ACCESSORIES order as separate catalog numbers (shipped separately)
NSP5 D ER KIT
LAF-12-SQUARE-LENS
PAGE 1 OF 3
Sensor Switch nLight secondary relay and dimming pack device used to switch and dim luminaires powered via an emergency circuit. Refer to NSP5 D ER KIT.
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2006-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 04/10/14. Specifications subject to change without notice.
Page 2
12” LAF
(33.7)
Overlap trim: 12-5/8 (32.1)
(19.7)
Square Lens
Wet Location, Horizontal Lamp, Double Twin-Tube or Triple-Tube
DIMENSIONAL DATA NOTES
All dimensions are inches (centimeters) unless otherwise noted.
13 -1/4
Aperture: 10-7/8 (27.6)
Ceiling opening:12-1/4 (31.1)
7-3/4
24 (61.0)
ORDERING NOTES
1. Multi-volt electronic ballast capable of operating on any voltage from 120V through
277V, 50 or 60 Hz.
2. For additional ballast types, refer to TECH-250.
3. Available in 120V or 277V only.
4. For dimensional changes, refer to TECH-140.
5. Meets codes that require in-fixture disconnect.
6. For Emergency generator/inverter applications order non-nLight enabled
fixture and NSP5 D ER KIT as an accessory. Refer to NSP5 D ER KIT.
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2006-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 04/10/14. Specifications subject to change without notice.
LAF-12-SQUARE-LENS
PAGE 2 OF 3
Page 3
12” LAF
90° 0
%1
°
ρ f20%
10 17 14 16 14 16 14
0°
160
320
480
640
800
ρ f20%
10 18 15 17 15 17 15
%1
°
'2
'1
90°
160
320
480
640
800
ρ f20%
10 18 15 17 15 17 15
%1
°
'2
'1
160
320
480
640
800
90° 22
ρ f 20%
10 15 13 15 13 15 13
%1
°
'1
160
320
480
640
800
Square Lens
Wet Location, Horizontal Lamp, Double Twin-Tube or Triple-Tube
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
LAF 2/26DTT 12FW T73
From 0° cp. Lumens
90°
15° 642 181
25° 561 280
35° 452 280
45°
45° 273 215
55° 139 129
65° 65 88
75° 32 35
85° 911
LAF 2/26DTT 12FW DOL
From 0° cp. Lumens
15° 875 190
25° 582 271
45°
35° 518 319
45° 315 245
55° 118 115
65° 62 62
0°
75° 28 31
85° 68
90° 0
0° 674
5° 674 85
0° 709
5° 715 68
(2) 26W F26DTT/27K LAMP, 1.2 S/MH, 3600 RATED LUMENS, TEST NO. 2192100602
Zone Lumens %lamp
0°-30° 504 14.01
0°-40° 783 21.78
0°-60° 1127 31.32
0°-90° 1240 34.46
90°-180°0 0.0
0°-180° 1240 34.46*
* Fixture efficiency
(2) 26W F26DTT/27K LAMP, 1.5 S/MH, 3600 RATED LUMENS, TEST NO. 2192100601
Zone Lumens %lamp
0°-30°528 14.68
0°-40°846 23.51
0°-60° 1206 33.50
0°-90° 1305 36.27
90°-180°0 0.0
0°-180° 1305 36.27*
* Fixture efficiency
ρ c 80% 50%30%
ρw 50% 30%50% 30% 50% 30%
1373635343433
2343232313130
3312930282927
4282627252625
5262425232423
6242123212221
7221921192019
8201819171917
9181618161715
ρ c 80% 50% 30%
ρw50% 30% 50% 30% 50%30%
1393837363635
2363434333332
3333131303029
4302829272827
5282527242624
6252324222422
7232122202220
8211921182018
9191719171816
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edgediameter edge
8' 22.3 6.3' 11.2 12.3' 2.2
10' 12.0 8.6' 6.0 16.7' 1.2
12' 7.5 10.9' 3.7 21.2' 0.7
14' 5.1 13.2' 2.6 25.7' 0.5
16' 3.7 15.4' 1.9 30.1' 0.4
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 23.5 6.4' 11.7 12.3
10' 12.6 8.7' 6.3 16.7
12' 7.9 11.0' 3.9 21.2' 0.8
14' 5.4 13.4' 2.7 25.7' 0.5
16' 3.9 15.7' 1.9 30.1' 0.4
50
beam angle 59.5° beam angle 96.3
50
beam angle 60.3° beam angle 96.3
0%
0%
.3
.3
LAF 2/26DTT 12FW FHL
From 0° cp. Lumens
90°
0° 691
5° 688 57
15° 667 188
25° 572 266
35° 491 306
45°
45° 325 250
55° 127 123
65° 82 163
75° 28 31
0°
85° 58
90° 0
LAF 2/26DTT 12FW DHL
90°
0°
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.
LAF-12-SQUARE-LENS
PAGE 3 OF 3
From 0° cp. Lumens
0° 596
5° 594 57
15° 559 159
25° 504 232
35° 384 241
45°
45° 231 182
55° 131 121
65° 83 84
75° 56 60
85° 33 36
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2006-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 04/10/14. Specifications subject to change without notice.
(2) 26W F26DTT/27K LAMP, 1.5 S/MH, 3600 RATED LUMENS, TEST NO. 2192100603
Zone Lumens %lamp
0–30° 519 14.42
0–40° 824 22.90
0–60° 1195 33.22
0–90° 1296 36.02
90–180° 00.0
0–180° 1296 36.02*
* Fixture efficiency
(2) 26W F26DTT/27K LAMP, 1.3 S/MH, 3600 RATED LUMENS, TEST NO. 2192102701
Zone Lumens %lamp
0–30°445 12.38
0–40°685 19.05
0–60°987 27.43
0–90° 1166 32.40
90–180°0 0.0
0–180° 1177 32.71*
* Fixture efficiency
ρ c 80% 50% 30%
ρw50% 30% 50% 30% 50% 30%
1393837363535
2363434333332
3333031293029
4302729262826
5272526242624
6252224222422
7232022202220
8211820182018
9191719161816
ρ c 80% 50%30%
ρw50% 30% 50% 30% 50% 30%
1353433323131
2313029282827
3282627252624
4262325232422
5242123202220
6221921192018
7201719171817
8181617151715
9171416141614
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 22.9 6.3' 11.4 12.5
10' 12.3 8.6' 6.1 17.0
12' 7.7 10.9' 3.8 21.6' 0.8
14' 5.2 13.2' 2.6 26.1' 0.5
16' 3.8 15.5' 1.9 30.6' 0.4
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 219.7 6.9' 10.113.5' 2.3
10' 10.6 9.4' 5.518.4
12' 6.5 11.8'3.4 23.3' 0.7
14' 4.5 14.3'2.3 28.2' 0.5
16'2.5 116.8' 1.733.1' 0.3
50
beam angle 59.7° beam angle 97.2
50
beam angle 59.8° beam angle 95.7
0%
0%
.3
.2
.1
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