Catalog
Number
Notes
FEATURES & SPECIFICATIONS
INTENDED USE — Suitable for use in ISO4 (Class 10) and ISO5 (Class 100) cleanroom applications.
Certain airborne contaminants can diminish integrity of acrylic. Click here for Acrylic Environmental Compatibility table for suitable uses.
Type
CONSTRUCTION — Die-formed 20-gauge cold rolled steel housing. Stainless steel or formed aluminum
housing available. End caps retain and securely hold diffuser in high vibration and airflow environments.
Finish: White polyester powder paint finish over five stage phosphatizing pretreatment with a minimum
reflectance of 90%.
Standard Teardrop
OPTICS — One piece, extruded, white acrylic diffuser with internal linear prisms for optimal light
control. Smooth external surface for undisturbed laminar air-flow. Clear available.
STP
ELECTRICAL — Thermally protected, resetting, Class P, HPF, non-PCB, UL listed, CSA certified ballast is
standard. Energy saving and electronic ballasts are sound rated A.
INSTALLATION — For surface mounting to 2" wide T-bar. For row mounting, white aluminum runbands
and fasteners are included.
LISTINGS — 120V, 277V and MVOLT are UL Listed and CUL Listed (standard). 347V is CUL Listed to Canadian safety standards (see Options). Tested in compliance with the International Organization for Standardization (ISO) Worldwide Contamination Classification. 25°C ambient temperature and dry location.
4' AND 8' LENGTHS
1 Lamp
WARRANTY — 1-year limited warranty. Complete warranty terms located at
www.acuitybrands.com/CustomerResources/Terms_and_conditions.aspx
Actual performance may differ as a result of end-user environment and application.
NOTE: Specifications subject to change without notice.
Specifications
Length: 48 (121.9)
Width: 2 (5.1)
Height: 6 (15.2)
With tandem:
Length: 96 (243.8)
Width: 2 (5.1)
Height: 6 (15.2)
All dimensions are inches (centimeters) unless otherwise indicated.
ORDERING INFORMATION
STP
1
Series
Lamps
Wattage
STP
1
(not included)
32
28T5
54T5HO
For tandem
double-length
unit, add prefix T.
Example: TSTP
Example: STP 1 32 MVOLT GEB10IS
For shortest lead times, configure products using standard options (shown in bold).
Diffuser
32W T8 (48")
28W T5 (46")
54W T5 (46")
(blank)
ACR
White acrylic
Clear acrylic
Voltage
Ballast
120
277
347
MVOLT
GEB10IS
GEB10RS
GEB10PS
GEB10PS90
Options
Electronic ballast for T8
<10% THD, instant start
Electronic ballast for T8
<10% THD, rapid start
Electronic ballast
for 28T5 <10% THD,
programmed start
Electronic ballast for
54T5HO <10% THD,
programmed start
Shipped installed in fixture
GLR
Internal fast-blow fusing1
GMF
Internal slow-blow fusing1
EIS1
Radio interference filter (one per fixture)
STSW Stainless steel housing, white
AL
Aluminum housing, white
EL
Emergency battery pack (nominal 300 lumens)2
EL5
Emergency battery pack (nominal 500 lumens)2
EL14
Emergency battery pack (nominal 1400 lumens)2
CSA
Listed and labeled to comply with Canadian
standards (347V only)
CRE
Continuous row end, ships with one end cap
CRM
Continuous row middle, ships with no end caps
Accessories: Order as separate catalog number. 3
STPEP
STPEP STSW
STPEP AL
Pair of cold rolled end caps, white
Pair of stainless steel end caps, white
Pair of aluminum end caps, white
Notes
1 Must specify voltage.
2 Must specify voltage; 120 or 277V only.
3 Available for replacements.
INDUSTRIALSTP_F
STP Standard Teardrop
DIMENSIONS
All dimensions are shown in inches (centimeters) unless otherwise noted.
Subject to change without notice.
48
(121.9)
2 (5.1)
6
(15.2)
96
(243.8)
2 (5.1)
12
(30.5)
6
(15.2)
PHOTOMETRICS
Calculated using the zonal cavity method in accordance with IESNA LM41 procedures. Floor reflectances are 20%. Lamp configurations shown are typical. Full photometric data on these and other configurations
available upon request.
LUMINAIRE CATALOG NO: STP 1 32
TEST NO: LTL11528
LUMENS PER LAMP: 2850
Luminaire Efficiency: 73.5%
LUMINAIRE CATALOG NO: STP 1 54T5HO
TEST NO: LTL18409
LUMENS PER LAMP: 4450
Coefficients of Utilization
pf
20%
pc
80%
50%
pw 70% 50% 30% 50% 30% 10%
0
78 78 78
73 73 73
1
63 59 55
59 55 52
2
53 47 42
49 44 39
3
45 39 33
42 36 31
4
39 33 27
37 31 26
5
35 28 23
32 26 21
6
31 24 19
29 23 18
7
28 21 17
26 20 16
8
25 19 14
23 18 14
9
23 17 13
21 16 12
10
21 15 11
19 14 11
RCR
RCR
Coefficients of Utilization
pf
20%
pc
80%
50%
30%
pw 70% 50% 30% 50% 30% 10% 50% 30% 10%
60 60 60
68 68 68
0 82 82 82
46 44 42
54 50 47
1 70 66 61
38 35 32
45 40 36
2 63 55 49
33 29 25
38 33 29
3 56 47 40
28 24 20
33 28 23
4 51 41 34
25 21 17
29 24 20
5 46 36 29
22 18 14
26 21 17
6 42 32 25
20 16 12
23 18 14
7 39 29 22
18 14 11
21 16 12
8 36 26 19
17 13 10
19 14 11
9 34 23 17
15 11 09
18 13 10
10 31 21 15
Zonal Lumen Summary
Zone
Lumens
% Lamp % Fixture
7.9
5.8
166
0° - 30°
14.5
10.7
304
0° - 40°
32.9
24.2
690
0° - 60°
66.0
48.6
1384
0° - 90°
34.0
25.0
712
90° - 180°
100.0
73.5
2096
0° - 180°
Zonal Lumen Summary
Zone Lumens
% Lamp
0° - 30°
258.0
5.8
0° - 40°
462.6
10.4
0° - 60°
1022.6
23.0
0° - 90°
2014.2
45.3
90° - 180° 1119.3
25.2
0° - 180° 3133.6
70.4
INDUSTRIAL: One Lithonia Way Conyers, GA 30012
Phone: 800-315-4963
30%
50% 30% 10%
64 64 64
51 48 45
43 38 35
36 32 28
32 27 23
28 23 19
25 20 16
22 17 14
20 16 12
19 14 11
17 13 10
% Fixture
8.2
14.8
32.6
64.3
35.7
100.0
STP_F
Fax: 770-981-8191
www.lithonia.com
© 2003-2012 Acuity Brands Lighting, Inc. All rights reserved. Rev. 03/26/12