Str22 2 Tt

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STR22 TT

2' × 2' Stratus Recessed Indirect / 2 and 3-Lamp TT
Project Information

Features
•	 Precision optical system produces an efficient luminaire
without sacrificing high visual comfort
•	 Completely recessed, provides a clean ceiling while providing
soft, uniform indirect illumination in rooms with ceilings as
low as 8 feet
•	 Utilizes the popular and very efficient twin tube lamp
•	 Light basket and reflectors are finished with a matte white
powder coat
•	 Ease of installation and maintenance
•	 Companion Louvered (STRL), side baskets (STS) and pendant
(STP) models available

Project Name

Type

Catalog No.

Date

Construction

Ceiling Compatibility

Installation

Certification

Luminaire housing and end caps are die formed
code gauge cold rolled steel. The aluminum
reflector is profiled to a precision curve and finished
with matte white paint for soft, uniform indirect
illumination. Matte white perforated light basket
backed by opal acrylic overlay snaps securely
into place and hinges down for ease of lamp
replacement. Thermoplastic light traps snap into
the housing at both ends of the basket to prevent
light leaks.
An access plate is furnished with each luminaire
for fast wiring access from the plenum. No need to
open fixture.
Electrical

22

Example STR22-240TTG-MPO-EPTTU

–

Model

–
No. of Lamps

STR Stratus Recessed
Indirect

2 Two
3 Three

All luminaires are built to UL 1598 standards and
bear appropriate UL and cUL or CSA labels. Damp
location labeling is standard. Emergency-equipped
fixtures labeled UL 924.

Standard class “P”, thermally protected, autoresetting HPF ballast, sound rated A. All ballast
leads extend a minimum of 6" through access
location. NEC/CEC-compliant ballast disconnect is
standard.

Ordering Information
STR

Luminaire is available to fit most standard ceiling
types. NEC-compliant T-bar clips supplied with all
grid trim fixtures. G trim fixtures used in SG ceilings
require T-Bar clip accessory. See ceiling details on
reverse. For hard ceilings order G trim and FK flange
accessory. Assemble then support FK accessory at
ceiling plane using tie wires (by others). Contact
your Columbia representative for compatibility
information for specific ceiling types or for
continuous row applications in hard ceilings.

MPO

–

–

–

Shielding

Voltage

G Grid Lay-in
SG Slot Grid
SM Surface Mount

MPO Metal Perf
w/Overlay

U 120V-277V
347 347V

Size

Lamp Type

Air Function

Ballast

22 2' × 2'

40TT Twin Tube, 2G11 Base: 40 Watt
50TT Twin Tube, 2G11 Base: 50 Watt

Blank Static
A Air Handling

ETT Electronic Twin Tube,
Instant Start
EPTT Electronic,
Programmed Start

Page 1/2 Rev. 04/15/10

Options

Ceiling Type

GLR
GMF
EL
NYCU

Fast Blow Fuse
Slow Blow Fuse
Emergency Battery Pack
NYC Compliant, Union Made

Accessories
(Order Separately)
FK22 2' × 2' Single Flange Kit
(Shipped separately)

RECESSED ARCHITECTURAL / STR22 TT

© 2010 Columbia Lighting, a division of Hubbell Lighting, Inc. Because of continuing product improvement programs, Columbia Lighting reserves the right to change
specifications without notice. 701 Millennium Blvd. Greenville, SC 29607 / Tel 864.678.1000 / Tech Support 864.678.1668 / Website www.columbialighting.com

STR22 TT

2' × 2' Stratus Recessed Indirect / 2 and 3-Lamp TT

Photometric Data

Test 11862 Test Date 1/8/03

Luminaire Data

Ballast
Ballast Factor
Lamp
Lumens per Lamp
Watts
Shielding Angle
Spacing Criterion
Luminous Opening
in Feet

Zonal Lumen Summary

Energy Data

STR22-240TTG-MPO-EBTT
Stratus Specialty

Zone

Lumens % Lamp % Fixt.

0-30

1101

17.5

25.7

2 × 2 2-Lamp with perforated
metal and overlay
C240I120RH
0.88
F40TT5
3150
65
N/A
0º= 1.25  90º= 1.35
Length: 1.92
Width: 1.88
Height: 0.00

0-40
0-60
0-90
0-180

1819
3299
4279
4279

28.9
52.4
67.9
67.9

42.5
77.1
100.0
100.0

Indoor Candela Plot

RCR

Coefficients of Utilization (%)
70
74
67
61
55
51
47
43
40
38
35

80
50 30
70 67
61 56
53 48
47 41
42 36
38 31
34 28
31 25
28 23
26 21

10
65
52
43
36
31
27
24
21
19
17

70
72
65
59
54
49
46
42
39
37
34

70
50 30
69 66
60 55
52 47
46 40
41 35
37 31
34 28
31 25
28 23
26 21

10
64
52
43
36
31
27
24
21
19
17

50
66
57
50
44
40
36
32
30
27
25

58
Noncompliant
$4.14 based on
3000 hrs. and
$0.08 per KWH

AVG. LUMINANCE (Candela/Sq. M.)

700

50
30
64
54
46
39
34
31
27
25
22
20

67.9%

Luminaire Efficacy Rating (LER)
IESNA RP-1-1993 Compliance
Comparative Yearly Lighting
Energy Cost per 1000 Lumens

90

75

RC
RW
1
2
3
4
5
6
7
8
9
10

Total Luminaire Efficiency

10
62
50
42
35
31
27
23
21
19
17

0
0
56
47
39
33
28
25
22
19
17
16

RCR = Room Cavity Ratio
RC = Effective Ceiling Cavity Reflectance RW = Wall Reflectance

Dimensional Data

60

Average Luminance Angle

Luminaire

0
30
40
45
50
55
60
65
70
75
80
85

0.0

22.5

45.0

67.5

90.0

4184
4008
3869
3774
3656
3515
3328
3147
2973
2742
2353
1745

4184
4060
3967
3905
3827
3722
3590
3443
3261
3030
2542
1848

4184
4180
4181
4179
4175
4185
4199
4220
4176
3768
2902
2190

4184
4290
4372
4432
4514
4622
4765
4869
4682
3791
3246
2361

4184
4328
4449
4534
4648
4799
4974
5066
4769
3929
3349
2395

1400
0

15

0.0

30
Horiz 0-180

45.0

45

90.0

Ceiling Compatibility

2' × 2', 2-Lamp, Lay-in
Recessed

Type G

FK22 Flange Kit

Side

51/2"

End

For lay-in installation in exposed grid ceilings.
Maximum tee widths of 1" and maximum heights
of 2" allowed.

24"
Surface

For hard ceiling applications, fixtures must be
ordered with a flange kit that wires directly
into the concealed ceiling opening for a clean
finished appearance. For row configurations
contact your local Columbia Representative.

Type SG

53/4"

25"

Side

For 9/16" slot grid type ceilings. Luminaire will be level with the ceiling plane. Slot grid tees must be field
installed all around the fixture.

Top View 31/2"
A

25"

End

Flange kit cut out dimension for single FK22 only: 243/8" × 243/8"

A
C

B

B

A

A

19"
211/2"
25"
Page 2/2 Rev. 04/15/10

15"
K.O. Dimensions
A: 5/16" Mounting K.O.
B: 7/8" Supply Stem K.O.
C: 2" Surface K.O.
NOTE:	 All dimensions are in inches; dimensions and specifications are subject to change without
notice. Please consult factory or check sample for verification.
RECESSED ARCHITECTURAL / STR22 TT

© 2010 Columbia Lighting, a division of Hubbell Lighting, Inc. Because of continuing product improvement programs, Columbia Lighting reserves the right to change
specifications without notice. 701 Millennium Blvd. Greenville, SC 29607 / Tel 864.678.1000 / Tech Support 864.678.1668 / Website www.columbialighting.com



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