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LB Dimensions
LBP Dimensions
1
3
⁄4
(44)
1
3
⁄4
(44)
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
LB/LBP 36
Belt Drive
Model
Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0 0.25 0.375 0.5 0.625 0.75 0.875 1 1.25 1.5
LB/LBP-36-5 1/2
220
CFM 6204
BHP 0.16
Sones 4.9
315
CFM 8884 6937
BHP 0.47 0.55
Sones 8.2 6.3
LB/LBP-36-7 3/4 360
CFM 10153 8570 7487
BHP 0.7 0.81 0.83
Sones 10.6 8.9 7.9
LB/LBP-36-10 1 397
CFM 11196 9816 8911 7775
BHP 0.94 1.08 1.1 1.1
Sones 13.7 12.1 10.6 9.4
LB/LBP-36-15 1
1
⁄2
426
CFM 12014 10765 9964 9056 7716
BHP 1.16 1.32 1.35 1.37 1.34
Sones 14.8 14.0 12.7 11.6 10.1
454
CFM 12804 11668 10949 10127 9209 7552
BHP 1.41 1.58 1.63 1.65 1.66 1.57
Sones 16.0 15.4 14.5 13.7 12.5 11.0
LB/LBP-36-20 2 499
CFM 14073 13064 12442 11760 11004 10173 8773
BHP 1.87 2.06 2.13 2.17 2.2 2.2 2.12
Sones 18.2 17.6 17.2 16.6 16.1 15.1 13.9
LB/LBP-36-30 3
536
CFM 15116 14196 13646 13037 12361 11652 10837 9559
BHP 2.31 2.52 2.61 2.67 2.7 2.73 2.72 2.65
Sones 20 19.7 19.3 18.7 18.4 17.8 16.7 15.8
572
CFM 16132 15287 14790 14229 13649 12989 12313 11534
BHP 2.81 3.04 3.14 3.21 3.26 3.29 3.32 3.31
Sones 22 22 21 21 20 19.9 19.0 18.1
LB/LBP-36-50 5
614
CFM 17316 16540 16087 15598 15066 14504 13890 13262 11584
BHP 3.48 3.72 3.84 3.93 3.99 4.05 4.08 4.1 4.04
Sones 25 24 24 24 23 23 22 21 19.2
678
CFM 19121 18419 18041 17621 17165 16683 16192 15636 14494 12970
BHP 4.69 4.95 5.08 5.21 5.3 5.37 5.44 5.47 5.52 5.45
Sones 30 29 29 29 28 27 27 26 24 22
MAX. BHP AT A GIVEN RPM - (rpm/384)
3
MAXIMUM FRPM = 678
TIP SPEED = rpm x 9.425
MAX. MOTOR FRAME SIZE = 184T
60
(1524)
46
(1168)
63
(1600)
32
5
⁄8
(829)
27
(686)
9
3
⁄4
(248)
51
3
⁄4
(1314)
63
(1600)
26
(660)
46
(1168)
46
(1168)
46
(1168)
34
3
⁄8
(873)
LB-36 LBP-36
Hood Thickness 0.064 (0.029) -
Cover Thickness - 0.064 (0.029)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 36 (914) 36 (914)
Roof Opening Square 38
1
⁄2 (978) 38
1
⁄2 (978)
Weight*
Galvanized,
338
(153)
Aluminum,
444 (201)
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
0 10 20 30
0
100
200
300
400
0 2 4 6 8 10 12 14 16 18 20
0.0
0.5
1.0
1.5
2.0
Static Pressure in. wg
cfm X 1000
m
3
/hr X 1000
Static Pressure Pa
RPM
HP
Density 0.075 lb/ft
3
1 1/2 hp
3/4 hp
1 hp
1/2 hp
2 hp
3 hp
5 hp
678
586
494
403
311
220
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