SERIES
EFTR
2’ x 2’ TT
Housing provided by others. Not recommended
for fixtures with black housing.
See back for dimensional requirements.
Lamps not included.
S P E C I F I C AT I O N S
VOLTAGE
TYPE
JOB
2’ x 2’ EFFICIENT TROFFER RETROFIT KIT
F E AT U R E S
•HOUSING – Provided by others, must fit within approved
minimum dimensions (see back for details).
Not recommended for fixtures with black housing.
• REFLECTORS/WIREWAY COVERS – 25-gauge C.R.S.
• DOOR FRAME & LOUVER – Door Frame: 22-gauge C.R.S.,
flat with mitered corners. T-slot steel hinge allows reversible
hinging and latching. Louver: 25-gauge C.R.S.
•FINISH – Reflectors/Wireway Covers: 92% minimum average
reflective white powder coat with multi-stage iron/phosphate
prepared metal. Door Frame & Louver: Highly-reflective
textured matte white powder coat.
• ELECTRICAL – Electronic ballast standard, either instant start
or programmed start, rated Class P.
•LABELS – UL/CUL classified as luminaire conversion,
retrofit kit.
• MOUNTING – Designed to retrofit existing troffers and
parabolics in grid ceiling applications.
•Attractive and environmentally sensitive–provides the fresh appearance
of a new architecturally designed fixture while recycling the existing
fixture housing.
•Can improve optical efficiency as much as 20% when replacing dated
troffers and parabolics, realizing substantial energy savings.
•Allows fixture upgrades without disturbing the ceiling.
• 2-5/8” cross baffles provide lamp cutoff and assist in glare reduction.
•Designed to fit into most 2’ x 2’ fixture housings with a minimum fixture
depth of 4”.
• T-slot steel hinge allows reversible hinging and latching and ensures
positive retention when door is opened.
• Cam latches close securely and allow hassle-free maintenance.
• Tool-less access to the electrical from room-side of fixture.
• Quick and easy installation.
•All parts painted after fabrication to facilitate installation, increase
efficiency, and inhibit corrosion.
• This fixture is proudly made in the USA.
H.E. W
strongly illiams, Inc.
installin recommend
s
g
prior to a trial fixture
o
project rdering full
quantiti
es.
O R D E R I N G I N F O R M AT I O N
Submittal
SERIES
EXAMPLE:
SERIES
EFTR
Efficient Troffer Retrofit Kit
NOM. NOM. TOTAL WATTAGE/
WIDTH LENGTH LAMPS
TYPE
OPTIONS
BALLAST
VOLTAGE
EFTR - 2 2 - 2 40TT - OPTIONS - EB2 - 120
TOTAL LAMPS
2
NOMINAL WIDTH
2
2’
LAMP WATTAGE/TYPE
40TT
2’, 40-watt long twin tube
NOMINAL LENGTH
2
2’
OPTIONS
For emergency ballasts and other options,
consult factory.
BALLAST TYPE
EB2
2-lamp electronic ballast
For additional ballast combinations, consult factory.
VOLTAGE
120
277
UNV
120V
277V
120 - 277V
H.E. Williams, Inc. • Carthage, Missouri • www.hewilliams.com • 417-358-4065 • Fax: 417-358-6015
Retrofit Kits page 2
2’ x 2’ TT
SERIES
EFTR
P H O T O M E T RY
I N F O R M A T I O N
Williams Catalog #EFTR-22-240TT-EB2-120
Test Repor t #14757.0, Dated 06/19/09
Lamp Type: FT40W/2G11/RS
Lamp Quantity: 2
CANDLEPOWER DISTRIBUTION
VERTICAL
ANGLE
0
5
15
25
35
45
55
65
75
85
90
HORIZONTAL ANGLE
0
45
90
1886.
1886.
1886.
1881.
1876.
1876.
1774.
1819.
1872.
1598.
1708.
1842.
1353.
1543.
1762.
1069.
1317.
1623.
740.
1033.
1340.
430.
592.
536.
175.
167.
117.
36.
33.
15.
0.
0.
0.
ZONAL
LUMENS
80°
70°
179.2
516.3
793.1
974.1
1029.6
927.9
532.8
166.4
32.3
60°
50°
40°
30°
0 - 180
81.8
20°
Z O N A L C AV I T Y C O E F F I C I E N T S
EFFECTIVE FLOOR CAVITY REFL. = .20
LUMENS %LAMP % FIXTURE
1489.
23.6
28.9
2463.
39.1
47.8
4420.
70.2
85.8
5152.
81.8
100.0
5152.
10°
0°
LUMEN SUMMARY
ZONE
0 - 30
0 - 40
0 - 60
0 - 90
90°
100.0
T O TA L L U M I N A I R E
OPTICAL EFFICIENCY = 81.8%
SPACING CRITERIA: END=1.2 DIAG=1.3 ACROSS=1.4
CEILING
WALL RCR
0
1
2
3
4
5
6
7
8
9
10
.70
.97
.90
.83
.77
.71
.65
.59
.55
.50
.46
.43
.80
.50
.97
.87
.78
.69
.62
.55
.49
.44
.39
.35
.32
.30
.97
.84
.73
.63
.55
.48
.42
.37
.32
.28
.25
.70
.95
.88
.81
.75
.69
.63
.58
.53
.49
.45
.42
.70
.50
.95
.85
.76
.68
.61
.54
.48
.43
.39
.35
.31
.30
.95
.83
.72
.63
.55
.47
.42
.37
.32
.28
.25
.50
.91
.82
.73
.66
.59
.52
.47
.42
.38
.34
.30
.50
.30
.91
.80
.70
.61
.53
.46
.41
.36
.32
.28
.25
.10
.91
.78
.66
.57
.49
.42
.37
.32
.27
.24
.21
A D D I T I O N A L I N F O R M AT I O N
MINIMUM FIXTURE
HOUSING DIMENSIONS
H.E. Williams, Inc. strongly recommends installing a
trial fixture prior to ordering full project quantities.
WIDTH
LENGTH
24” max.
23-13/16” min.
15-1/4” min. inside
11/16” min.
door depth
4” min.
inside
depth
20-1/2” min. inside
21-1/4” min.
fixture inside
22-3/4” min. inside
door opening
22-9/16” min. door
opening inside
H.E. Williams, Inc. • Carthage, Missouri • www.hewilliams.com • 417-358-4065 • Fax: 417-358-6015
Information contained herein is subject to change without notice.
HEW70130RJ
REV.12/02/13