JT824-2, JT824-3
2' × 4' Dedicated T8 Lensed Troffer / 2 or 3-Lamp T8
PROJECT INFORMATION
Project Name
Type
Catalog No.
Date
CONSTRUCTION
FEATURES
• T8 optimized fluorescent lensed troffer
• Shallow design frees up plenum space
• Hemmed fixture edges reduce risk of injury during fixture
handling and installation
• Integral T-bar clips quickly secure fixture to the grid
• Corner hinging for easy insertion and removal of
shielding frame
• Housing embossments provide extra strength and rigidity
• Housing ends secured by unique corner interlock and screws
• Snap-in ballast cover requires no tools for wireway access
• Flush steel shielding frame, screw assembled for easy
diffuser replacement
• Rotary action cam latches. Smooth operating for secure
shielding retention
• Metal to metal light leak protection on all four sides of
shielding frame
• Rotary lock lampholders for positive lamp contact
• Heat sink embossments behind ballasts for cooler operation,
longer life
• Recessed, surface or cable mount
• UL listed 1598
Housing is constructed of heavy gauge steel, die
formed for extra rigidity. Four T-bar clips integral
to housing. Housing features hemmed edges.
Door frame hinges and latches from either side.
Wireway accessible from below for upgrades or
maintenance.
BALLASTS
Energy efficient, thermally protected, automatic
resetting, Class “P”, high power factor, sound
rated A, unless otherwise specified. For a specific
vendor and/or ballast, specify as option. CEE NEMA
Premium compliant.
ELECTRICAL
Standard class "P," thermally protected,
autoresetting HPF ballast, sound rated A. CEE
NEMA Premium compliant. All ballast leads extend
a minimum of 6" through access location. NEC/
CECcompliant ballast disconnect is standard.
FINISH
24
MODEL
–
32
NO. OF LAMPS
JT8 Dedicated
T8 Lensed
Troffer
2 Two
3 Three
–
–
SHIELDING
VOLTAGE
G Inverted T-Bar1
SM Surface Mount
CM Cable Mount2
A12 Pattern 12 Acrylic
0.100" Nominal (Std.)
A12.125 Pattern 12 Acrylic
0.125" Nominal
A19 Pattern 19 Acrylic
0.156" Male Prism
PC1 Silver Parabolic Louver
1/2" × 1/2" × 1/2"
For more shielding, see Options
and Accessories.
U 120V-277V
347 347V
DOOR STYLE
FS Flush Steel
FA Flush Aluminum
For additional door
styles contact your
local Columbia Lighting
representative.
ACCESSORIES (ORDER SEPARATELY)
FK24 2' × 4' Flange Kit
FKCR Flange Kit Continuous Row Connector
CM48Y2SC3F-KIT 48" Cable Mount Kit for 2' wide CM ceiling
type, 3 Wire Feed Cord
For drywall order flange kit accessories separately.
Order hanger accessories separately.
3
In-Fixture Module Antenna adds 2" to overall fixture height at power feed location.
4
Not available with Surface Mount ceiling types.
5
Provides ends with wiring access for continuous row mounting.
6
Contact Hubbell representative for continuous row, 3-lamp fixtures.
1
2
Page 1/3 Rev. 11/13/15
–
CEILING TYPE
SIZE
LAMP TYPE
CERTIFICATION
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. UL Sanitation Approved.
EXAMPLE JT824-232G-FSA12-EU-FO735- C388-GLR
24 2' × 4'
32 4', T8: 32, 30, 28 or 25 Watt
CEILING COMPATIBILITY
Designed for recessed installation in standard
inverted tee grid ceilings (G), recessed installation in
hard ceilings (G with FK accessory), Surface mount
at ceiling plane (SM) or cable mount suspension
below ceiling plane (CM). For compatibility with
specific ceilings contact your Hubbell Lighting
representative.
All metal parts processed with a phase phosphate
bonding treatment. Grid units are pre-painted with
high gloss baked white enamel, 86% reflective.
Polyester powder coat paint after fabrication (PAF)
option available, reflectance 90%.
ORDERING INFORMATION
JT8
SHIELDING
100% virgin acrylic prismatic 12, extruded and
roll-embossed, diagonally oriented female prisms
standard. Other shielding may be specified. If
desired shielding media is not shown in ordering
guide, contact your local Hubbell Lighting
representative.
BALLAST
E Electronic T8, Instant Start
3E 3-Lamp Electronic T8,
Instant Start
24E (1) 2-Lamp & (1) 4-Lamp
Electronic T8, Instant Start
(For use with MS9)
OPTIONS
F830
F835
F841
GLR
EL
PAF
MS9
C388
C384
C488
C424
M4R
G1
G2
G3
WIH
30K 78+CRI T8 Lamps Installed
35K 78+CRI T8 Lamps Installed
41K 78+CRI T8 Lamps Installed
Fast Blow Fuse
Emergency Battery Pack Installed
Paint After Fabrication
Master/Satellite w/9' Harness
3/8" Flex with 3 No. 18 Wires
3/8" Flex with 3 No. 14 Wires
3/8" Flex with 4 No. 18 Wires
1/2" Flex with 4 No. 14 Wires
Specular Reflector
Single Gasket (Door to Housing)
Double Gasketing (G1 and Lens to Door)
Triple Gasketing (G2 and Housing to Ceiling)
wiHUBB Enabled3,4
EP Electronic T8, Programmed
Start
3EP 3-Lamp Electronic T8,
Programmed Start
ELW 2-Lamp Electronic T8, 0.77
Ballast Factor, Low Wattage,
Instant Start
EOR End of Row (SM/CM only)5,6
3ELW 3-Lamp Electronic T8, 0.77
INT Intermediate (SM/CM only)5,6
Ballast Factor, Low Wattage,
CP Chicago Plenum
Instant Start
For a complete set of options, see Options and
For a specific ballast vendor, show as Accessories.
option.
LENSED TROFFERS / JT824-2, JT824-3
© 2015 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 / Website www.columbialighting.com
JT824-2, JT824-3
2' × 4' Dedicated T8 Lensed Troffer / 2 or 3-Lamp T8
PHOTOMETRIC DATA
Test 13120 Test Date 11/07/2003
AVG. LUMINANCE (Candela/Sq. M.) COEFFICIENTS OF UTILIZATION (%)
0.0 22.5 45.0 67.5 90.0
Average Luminance Angle
JT824-332G-FSA12
J Lensed Troffer
2' x 4' 3-Lamp with
A-12 Pattern Acrylic
Prismatic Lens
Luminaire
B332I120RH-A
0.88
F32T8
2900
Ballast
Ballast Factor
Lamp
Lumens per
Lamp
Watts
Shielding
Angle
Spacing
Criterion
84
N/A
0
30
40
45
50
55
60
65
70
75
80
85
4289
4196
3635
3655
3299
2993
2706
2420
2178
2101
2255
2344
4289
4277
4032
3764
3469
3133
2694
2238
1908
1792
1822
2009
4289
4409
4230
3994
3761
3443
2903
2231
1643
1501
1831
2079
4289
4495
4421
4218
3940
3569
3078
2547
2223
2130
2229
2555
4289
4518
4515
4355
4047
3647
3161
2631
2326
2368
2583
2696
0º = 1.23 90º = 1.36
ZONAL LUMEN SUMMARY
RCR
LUMINAIRE DATA
RC
RW
1
2
3
4
5
6
7
8
9
10
70
93
85
78
71
66
61
57
53
49
46
80
50 30
89 85
78 73
69 63
62 55
55 48
50 43
45 38
42 35
38 31
35 29
10
82
68
58
49
43
38
33
30
27
24
70
50 30
87 84
77 72
68 62
61 54
54 48
49 42
45 38
41 34
38 31
35 29
70
90
83
76
70
64
59
55
51
48
45
10
81
67
57
49
42
37
33
30
27
24
50
83
74
65
59
53
48
44
40
37
34
INDOOR CANDELA PLOT
50
30
81
70
60
53
47
42
37
34
31
28
10
79
66
56
48
42
37
33
29
27
24
90
0
0
72
61
52
45
39
35
31
28
25
23
RCR = Room Cavity Ratio
RC = Effective Ceiling Cavity Reflectance RW = Wall Reflectance
ENERGY DATA
Zone
Lumens
Lamp
Fixt.
Total Luminaire Efficiency
84.6%
0-30
0-40
0-60
0-90
0-180
2232
3678
6216
7364
7364
25.7
42.3
71.4
84.6
84.6
30.3
49.9
84.4
100.0
100.0
Luminaire Efficacy Rating (LER)
IESNA RP-1-2004 Compliance
Comparative Yearly Lighting
Energy Cost per 1000 Lumens
77
Non-Compliant
$3.12 based on 3000 hrs.
and $0.08 per KWH
Test 13121 Test Date 1/8/03
0.0 22.5 45.0 67.5 90.0
B232I120RH-A
0.88
F32T8
2900
Ballast
Ballast Factor
Lamp
Lumens per
Lamp
Watts
Shielding
Angle
Spacing
Criterion
60
N/A
0
30
40
45
50
55
60
65
70
75
80
85
2967
2850
2638
2430
2198
1973
1757
1577
1509
1596
1716
1780
2967
2921
2733
2537
2308
2046
1754
1461
1302
1329
1450
1656
2967
3045
2893
2719
2513
2220
1806
1377
1100
1169
1389
1568
2967
3133
3073
2912
2669
2327
1923
1563
1361
1377
1512
1709
2967
3155
3160
2986
2714
2394
2036
1752
1603
1650
1778
1850
0º = 1.23 90º = 1.36
ZONAL LUMEN SUMMARY
RCR
JT824-232G-FSA12
J Lensed Troffer
2' x 4' 2-Lamp with
A-12 Pattern Acrylic
Prismatic Lens
Luminaire
AVG. LUMINANCE (Candela/Sq. M.) COEFFICIENTS OF UTILIZATION (%)
Average Luminance Angle
LUMINAIRE DATA
RC
RW
1
2
3
4
5
6
7
8
9
10
70
94
87
79
73
67
62
58
54
50
47
80
50 30
91 87
80 74
71 64
63 56
57 49
51 44
47 39
43 36
39 32
36 30
10
84
70
59
50
44
39
34
31
28
25
70
92
84
77
71
66
61
56
53
49
46
70
50 30
89 85
78 73
69 63
62 55
56 49
50 43
46 39
42 35
39 32
36 29
10
83
69
58
50
44
38
34
31
28
25
50
85
75
67
60
54
49
45
41
38
35
50
30
82
71
62
54
48
43
38
35
32
29
10
80
67
57
49
43
38
34
30
27
25
0
0
74
62
54
46
40
36
32
28
26
23
RCR = Room Cavity Ratio
RC = Effective Ceiling Cavity Reflectance RW = Wall Reflectance
ENERGY DATA
Zone
Lumens
Lamp
Fixt.
Total Luminaire Efficiency
86.3%
0-30
0-40
0-60
0-90
0-180
1542
2538
4234
5004
5004
26.6
43.8
73.0
86.3
86.3
30.8
50.7
84.6
100.0
100.0
Luminaire Efficacy Rating (LER)
IESNA RP-1-2004 Compliance
Comparative Yearly Lighting
Energy Cost per 1000 Lumens
73
Non-Compliant
$3.29 based on 3000 hrs.
and $0.08 per KWH
DIMENSIONAL DATA
INDOOR CANDELA PLOT
CEILING COMPATIBILITY
FK24 Flange Kit
Type G
31/8"
24"
2' × 4' 2-Lamp Lay-In
Side
48"
End
For lay-in installation in exposed grid
ceilings. Maximum tee widths of 1" and
maximum tee heights of 2" allowed.
4½"
3"
A
K
35/32"
Side
End
For hard ceiling applications order FK24 flange kit. Flange kit
wires directly into concealed ceiling opening for a clean, finished
appearance.
For flanged fixtures in row
configurations, the FKCR
adapter bracket kit is required
in addition to the FK24 kit.
Order one less FKCR than the
total number of fixtures in row.
(Example: Row of two, order (2)
FK24 & (1) FKCR)
FKCR
33/32"
A: 7/8" Diameter knockout
K: 2" × 3" through hole for access plate.
Row cut out dimensions using FK24 & FKCR adapters:
NOTE: All dimensions are in inches; dimensions and
Width 243/8", Length [48" × (# in row)] + 3/8". Example: (48" × 2) + 3/8"= 963/8"
specifications are subject to change without notice.
Please consult factory or check sample for verification. Flange kit rough in dimensions for single unit only: 243/8" × 483/8"
Page 2/3 Rev. 11/13/15
LENSED TROFFERS / JT824-2, JT824-3
© 2015 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 / Website www.columbialighting.com
JT824-2, JT824-3
2' × 4' Dedicated T8 Lensed Troffer / 2 or 3-Lamp T8
DIMENSIONAL DATA - SURFACE MOUNT (SM) AND CABLE MOUNT (CM)
445⁄8"
Mounting
Holes: (4) 1⁄4–1⁄2"
DIA KOs (A)
43⁄4"
123⁄8"
11⁄2"
Thru
Hole
123⁄8"
41⁄2" x 5" Mounting Collar (SM only).
For Cable Mount (CM) a 2" x 3" access
plate with (2) 7⁄8" K.O.s provided in
place of Mounting Collar shown.
NOTE: All dimensions are in inches;
dimensions and specifications are
subject to change without notice.
Please consult factory or check
sample for verification.
14"
5"
25"
49"
33⁄4"
Side View
End View
SURFACE MOUNT
CABLE MOUNT
Order SM ceiling type. Mounting collar required for surface
mounting. (4) Mounting knock-outs, 1⁄4" to 1⁄2" provided as
shown, marked "A".
Order CM ceiling type. Access plate supplied for cable
mounting or suspension. Use CM48Y2SC3F-KIT 48" cable
mount kit. Includes 3 wire feed cord. For other wiring needs,
contact Hubbell Lighting representative. Mounting knock-outs,
1⁄4" to 1⁄2", provided as shown, marked "A".
Page 3/3 Rev. 11/13/15
LENSED TROFFERS / JT824-2, JT824-3
© 2015 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 / Website www.columbialighting.com