Filter
Top Products
22
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 54
Belt Drive
0 102030405060
0
50
100
150
200
250
300
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
I
S
S
Y
S
T
E
M
C
U
R
V
E
0 5 10 15 20 25 30 35 40
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Static Pressure in. wg
cfm X 1000
m
3
/hr X 1000
Static Pressure Pa
RPM
HP
Density 0.075 lb/ft
3
7 1/2 hp
5 hp
3 hp
2 hp
1 hp
1 1/2 hp
401
348
293
239
184
130
Model
Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.125
LB/LBP-54-10 1
130
CFM 12159
BHP 0.25
Sones 4.6
155
CFM 14497 11186
BHP 0.42 0.48
Sones 5.8 4.9
206
CFM 19267 17356 13895
BHP 0.99 1.1 1.12
Sones 8.7 8.5 8.7
LB/LBP-54-15 1
1
⁄2 235
CFM 21980 20319 17983 14194
BHP 1.47 1.6 1.66 1.6
Sones 11.2 11.2 11.3 11.7
LB/LBP-54-20 2 258
CFM 24131 22628 20831 17904
BHP 1.95 2.09 2.18 2.21
Sones 12.1 12.5 13.0 13.3
LB/LBP-54-30 3
277
CFM 25908 24517 22962 20554 17326
BHP 2.41 2.57 2.68 2.72 2.65
Sones 14.1 13.4 14.1 14.4 13.7
296
CFM 27685 26383 25030 23122 20394 16072
BHP 2.94 3.11 3.25 3.31 3.34 3.1
Sones 17.6 15.5 15.2 16.0 15.1 13.1
LB/LBP-54-50 5
323
CFM 30210 29017 27789 26305 24165 21535 17215
BHP 3.82 4.01 4.17 4.27 4.31 4.29 4.01
Sones 19.3 17.8 17.3 18.4 18.3 16.8 14.7
350
CFM 32736 31634 30514 29312 27766 25487 22974 18944
BHP 4.87 5.06 5.25 5.39 5.46 5.5 5.43 5.13
Sones 18.9 19.5 20 21 22 21 19.0 17.8
LB/LBP-54-75 7
1
⁄2
376
CFM 35167 34142 33111 32039 30716 29030 26889 24483 20824
BHP 6.03 6.25 6.45 6.62 6.72 6.79 6.82 6.71 6.4
Sones 22 23 23 24 25 26 24 22 21
401
CFM 37506 36544 35583 34583 33500 32150 30332 28324 26018 22767
BHP 7.32 7.54 7.77 7.96 8.11 8.19 8.24 8.29 8.13 7.81
Sones 25 26 26 27 28 29 29 27 26 24
MAX. BHP AT A GIVEN RPM - (rpm/198)
3
MAXIMUM FRPM = 401
TIP SPEED = rpm x 14.137
MAX. MOTOR FRAME SIZE = 213T
79
1
⁄2
(2019)
64
(1626)
87
(2210)
45
3
⁄8
(1153)
38
(965)
12
1
⁄2
(318)
70
(1778)
83
1
⁄2
(2121)
35
(889)
64
(1626)
64
(1626)
64
(1626)
43
5
⁄8
(1108)
LB-54 LBP-54
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 54 (1372) 54 (1372)
Roof Opening Square 56
1
⁄2 (1435) 56
1
⁄2 (1435)
Weight*
Galvanized,
596
(270)
Aluminum,
780 (354)
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.