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Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not include the
effects of appurtenances (accessories).
The sound ratings shown are loudness values in fan sones at 1.5 m (5 feet) in a hemispherical free field calculated per AMCA International Standard 301. Values shown are
for installation type B: free inlet hemispherical sone levels.
BSQ 180 - Belt Drive
28
(711)
28
(711)
23
7
⁄8
(606)
28
(711)
1
1
⁄2 (38)
*13
3
⁄4
(349)
*18
(457)
*24
3
⁄8
(619)
Damper size = 24 x 24 (610 x 610)
Unit weight** = 245 (111)
Housing thickness = 18 ga
Model
Number
Motor
HP
Fan
RPM
CFM / Static Pressure in Inches wg
0.125 0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000 2.500
180
180-3 1/3
700
CFM 2649 2387
BHP 0.23 0.24
Sones 10.0 9.6
791
CFM 3051 2845 2217
BHP 0.32 0.34 0.35
Sones 10.6 10.9 9.6
180-5 1/2 905
CFM 3546 3366 2928 2175
BHP 0.48 0.49 0.52 0.49
Sones 12.2 12.1 11.6 10.8
180-7 3/4 1037
CFM 4109 3955 3616 3179 2432
BHP 0.71 0.73 0.77 0.79 0.73
Sones 14.5 14.2 13.5 13.4 12.8
180-10 1 1141
CFM 4549 4412 4127 3760 3290 2523
BHP 0.94 0.96 1.01 1.04 1.04 0.96
Sones 16.5 16.1 15.4 15.0 14.9 13.8
180-15 1
1
⁄2
1224
CFM 4898 4774 4507 4194 3836 3300 2331
BHP 1.15 1.18 1.23 1.28 1.29 1.27 1.08
Sones 18.4 17.7 17.1 16.5 16.5 15.8 14.4
1306
CFM 5242 5128 4878 4610 4281 3884 3332
BHP 1.40 1.43 1.48 1.53 1.56 1.57 1.50
Sones 20 19.5 18.8 18.3 17.8 17.5 16.8
180-20 2
1372
CFM 5519 5410 5174 4937 4630 4308 3854 3218
BHP 1.62 1.65 1.71 1.75 1.81 1.82 1.81 1.7
Sones 22 21 20 19.8 19.0 18.7 18.3 17.5
1437
CFM 5790 5686 5463 5236 4964 4662 4298 3814 3106
BHP 1.86 1.89 1.95 2.00 2.06 2.09 2.09 2.04 1.89
Sones 23 22 22 21 21 19.7 19.6 19.1 18.2
180-30 3
1541
CFM 6224 6127 5922 5710 5488 5213 4927 4567 4116
BHP 2.29 2.32 2.38 2.45 2.50 2.56 2.58 2.57 2.52
Sones 26 25 25 24 24 22 22 21 21
1645
CFM 6656 6566 6377 6179 5981 5744 5485 5216 4866 3898
BHP 2.78 2.81 2.88 2.95 3.01 3.07 3.12 3.14 3.13 2.94
Sones 29 28 28 27 27 26 24 24 24 23
MAX Bhp AT A GIVEN RPM = (rpm/1125)
3
MAXIMUM RPM = 1645
TIP SPEED (ft/min) = rpm x 4.843
MAX NEMA MOTOR FRAME SIZE = 184T
OUTLET VELOCITY (ft/min) = 0.2553 x cfm
0 2 4 6 8 10
0
100
200
300
400
500
600
700
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 1000 2000 3000 4000 5000 6000 7000
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Static Pressure in. wg
cfm
m
3
/hr X 1000
Static Pressure Pa
3 hp
1645
1430
1220
1010
800
590
2 hp
1 1/2 hp
1 hp
3/4 hp
1/2 hp
1/3 hp
RPM
HP
Density 0.075 lb/ft
3
Dimensions shown in inches (millimeters) and weight is shown in pounds (kilograms).
*Motor cover is optional. Size may be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.