
Luminaire Type: 
Catalog Number 
(autopopulated):
Gotham Architectural Downlighting 
Decorative Fluorescent Downlights
8” PDRGF
Semi-recessed Glass Shade
Triple-Tube and Double Twin-Tube Lamps
FEAT URE S ORDERING INFORMATION NOTES
GLASS SHADE
•  Semi-recessed shade is pressed, colored glass with an acid etched exterior 
finish and a matte white glazed interior décor. Available in white, amber or blue.
•  Minimum flange with textured polyester powder paint finish available in matte 
white, matte black or satin silver.
MECHANICAL SYSTEM
•  16-gauge painted steel mounting/plaster frame with integral brackets to retain 
glass shade. 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 three 1/2” knockouts for straight-through conduit 
runs. Capacity: 8 (4 in, 4 out) No. 12 AWG conductors rated for 90°C.
EXAMPLE: PDRGF 18TRT 8WG DBLB MVOLT
ELECTRICAL SYSTEM
•  Vertically-mounted, four-pin, positive-latch, thermoplastic socket.
•  Class P, thermally-protected, high power factor electronic ballast mounted to the 
junction box.
LISTING
•  Fixtures are UL listed for thru-branch wiring, Non-IC recessed mounting and 
damp locations. Listed and labeled to comply with US and Canadian Standards.
WARRANTY
•  1-year limited warranty. Complete warranty terms located at: 
www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx
Wattage/ 
Series
PDRGF 13DTT
Lamp Shade color Flange color Voltage Ballast Options
13TRT 
18DTT 
18TRT 
26DTT 
26TRT 
32TRT
8WG White 
glass
8AG Amber 
glass
8BG Blue 
glass
DWHG Matte 
white
DBLB Matte 
black
DNAS Satin 
silver
MVOLT 
120 
277 
347
1
(blank) Electronic ballast
2
ADZT
ECOS
ADEZ
Advance Mark 7® electronic 
0-10V dimming ballast
2,3
Lutron EcoSystem® electronic dimming ballast
4
Advance Mark 10® 
electronic line-voltage 
dimming ballast
4,5
DMHL3
Lutron Hi-Lume® 1% electronic dimming ballast
2,6
ELR
2,6
ELRHL
2,6
ELRSD
ELRB94
2,6
BGTD 
WLP 3500 K lamp (shipped separately) 
7
RRL
Emergency battery pack. Remote test switch provided. 
High lumen output emergency battery pack. Remote 
test switch provided. 
Emergency battery pack with self diagnostics. Remote 
test switch provided.
2,6
Bodine B94 emergency battery pack. Remote test 
switch provided. 
Bodine GTD™ generator transfer device
RELOC®-ready luminaire. Provides compatibility with 
Lithonia RELOC system. Access above ceiling required.
CP Chicago plenum 
NEPP
GMF 
GLR
Interface for Sensor Switch® nLight® network with 
integral power supply. Refer to TN-623-01.
4
Single, slow-blow fuse
4
Single, fast-blow fuse
ORDERING NOTES
1. Multi-volt electronic ballast capable of operating on any line voltage from 
120V through 277V, 50 or 60 HZ. 
2. Not available with 347V.
3. Not available with 13W.
4. 120V or 277V only.
PDRGF-8-SHADE
PAGE 1 OF 3
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2007-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 01/07/14. Specifications subject to change without notice.
5. Available in 26W and 32W only.
6. For dimensional changes, refer to TECH-140.
7. For compatible RELOC systems, refer to TECH-110.

8” PDRGF
Overlap Trim: 9-1/4 (23.5)
Semi-recessed Glass Shade
Triple-Tube and Double Twin-Tube Lamps
DIMENSIONAL DATA 
All dimensions are inches (centimeters) unless otherwise noted.
5-9/16
(14.1)
15-7/8
(40.3)
5-1/8
(13.0)
Shade Aperture: 7-5/16 (18.6) 
Ceiling Opening: 8-7/8 (22.5)
14-5/16
(36.3)
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2007-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 01/07/14. Specifications subject to change without notice.
PDRGF-8-SHADE
PAGE 2 OF 3

8” PDRGF
Semi-recessed Glass Shade
Triple-Tube and Double Twin-Tube Lamps
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
PDRGF 8AG
100
PDRGF 8BG
 90°
 90°
 80°
 80°
 80°
 70°
 70°
 60°
 60°
 60°
 50°
 50°
 40°
 40°
 40°
 90°
 80°
 80°
 70°
 60°
 60°
 50°
 40°
 40°
26TRT amber glass, 1800 rated lumens, 1.2 s/mh, Test No. LTL19649
Ave Lumens
0
278
5
285
15
302
25
263
35
162
45
84
55
44
65
26
75
14
85
5
90
2
119 
101
Zone Lumens% Lamp
0° - 30°
231.5
0° - 40°
28 
85
65 
41 
26 
15
6
0° - 60°
0° - 90° 
90° - 120° 
90° - 130° 
90° - 150° 
90° - 180°
0° - 180°
332.1
438.1
484.0
3.4
3.4
5.6
6.6
490.6
*Efficiency
*27.3
pc 80%70% 50% 
pw 50%30%10%50% 30%10% 50%30% 10%
12.9
18.4
24.3
26.9
0.2
0.2
0.3
0.4
0 
1 
2 
3 
4 
5
RCR
6 
7 
8 
9
10
32
32
32
27
28
29
24
25
26
21
22
24
18
20
22
16
18
20
15
16
18
13
15
17
12
14
16
11
13
15
10
12
14
32TRT blue glass, 2400 rated lumens, 1.2 s/mh, Test No. LTL19647
Ave Lumens
0
457
5
463
15
492
25
450
35
323
45
182
55
100
65
54
75
27
85
7
90
0
139 
205 
200 
143
Zone Lumens % Lamp
0° - 30°
388.1
0° - 40°
45
91 
55 
29
8
0° - 60°
0° - 90° 
90° - 120° 
90° - 130° 
90° - 150° 
90° - 180°
0° - 180°
588.6
822.5
913.6
0.0
0.0
2.9
4.2
917.8
*Efficiency
*38.2
pc 80% 70% 50% 
pw 50%30% 10% 50% 30% 10% 50% 30% 10%
16.2
24.5
34.3
38.1
0.0
0.0
0.1
0.2
0 
1 
2 
3 
4 
5
RCR
6 
7 
8 
9
10
45
45
45
38
40
41
33
35
37
28
30
33
25
27
30
22
24
27
20
22
25
18
20
23
16
18
21
15
17
20
14
16
18
32
27
28
29
23
24
26
20
22
23
18
20
21
16
18
20
15
16
18
13
15
17
12
14
15
11
13
14
10
12
13
44
44
44
38
39
40
32
34
36
28
30
32
25
27
29
22
24
27
20
22
25
18
20
23
16
18
21
15
17
19
14
15
18
26
27
27
23
24
25 
23 
21 
19 
18 
16 
15 
14 
13
42
42
37
38
33
35
29
31
26
29
24
26
21
24
20
22
18
20
17
19
15
18
Mounting
20
21 
19 
17 
16 
15 
13 
12 
12
Height
18
8.0
16
10.0
15
12.0
13
14.0
12
16.0
11 
10
42 
37 
32
Mounting
28
Height
24
8.0
22
10.0
20
12.0
18
14.0
16
16.0
15 
14
30
30
30
32
32
50% beam -
Inital FC
Center
BeamDiameterFCDiameterFC
9.2
4.9
3.1
2.1
1.5
Inital FC
Center
BeamDiameter FC Diameter FC
15.1
8.1
5.1
3.5
2.5
60.0°
6.4
8.7
11.0
13.3
15.6
50% beam -
63.1°
6.8
9.2
11.7
14.1
16.6
4.6
2.5
1.5
1.1
0.8
7.6
4.1
2.5
1.7
1.3
10% beam -
91.1°
11.2
15.3
19.4
23.5
27.5
10% beam -
96.1°
12.2
16.7
21.2
25.6
30.1
0.9
0.5
0.3
0.2
0.2
1.5
0.8
0.5
0.3
0.3
PDRGF-8-SHADE
PAGE 3 OF 3
PDRGF 8WG
0
0
0
0
0
0
0
PHOTOMETRY NOTES
 90°
 80°
 80°
 70°
 60°
 60°
 50°
 40°
 40°
42TRT white glass, 3200 rated lumens, 1.4 s/mh, Test No. LTL19645
Ave Lumens
0
501
5
516
15
559
25
541
35
431
45
302
55
212
65
165
75
137
85
110
90
95
158 
247 
269 
233 
191 
164 
145 
120
Zone Lumens % Lamp
0° - 30°
455.1
0° - 40°
50
0° - 60°
0° - 90° 
90° - 120° 
90° - 130° 
90° - 150° 
90° - 180°
0° - 180°
723.7
1147.8
1576.4
139.4
139.7
142.6
144.0
1720.5
*Efficiency
*53.8
pc 80% 70% 50% 
pw 50%30%10% 50%30% 10% 50% 30% 10%
14.2
22.6
35.9
49.3
4.4
4.4
4.5
4.5
0 
1 
2 
3 
4 
5
RCR
6 
7 
8 
9
10
63
63
51
53
42
46
36
41
31
36
28
33
25
29
22
27
20
24
18
23
17
21
•  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.
GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2007-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 01/07/14. Specifications subject to change without notice.
63 
48 
39 
33 
28 
24 
21 
19 
17 
15 
14
47
49
52
38
41
45
32
35
40
27
31
35
24
27
32
21
24
29
19
22
26
17
20
24
15
18
22
14
16
20
45
47
49
37
39
42 
37 
33 
30 
27 
25 
23 
21 
20
Mounting
31
34 
29 
26 
23 
21 
19 
17 
16
Height
26
8.0
23
10.0
20
12.0
18
14.0
16
16.0
15 
13
57
57
57
61
61
61
50% beam -
7.5
10.2
12.9
15.6
18.3
68.2°
Inital FC
Center
BeamDiameterFCDiameterFC
16.6
8.9
5.6
3.8
2.7
8.3
4.5
2.8
1.9
1.4
10% beam -
105.5°
14.5
19.7
25.0
30.2
35.5
1.7
0.9
0.6
0.4
0.3