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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 80 - Belt Drive
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
80
80-4 1/4
1050
CFM 372 298
BHP 0.049 0.049
Sones 8.0 7.6
1207
CFM 445 386 206
BHP 0.073 0.075 0.065
Sones 9.7 9.1 8.2
1520
CFM 585 542 442 301
BHP 0.15 0.15 0.15 0.14
Sones 13.9 13.5 11.8 10.8
1676
CFM 652 615 530 426 254
BHP 0.19 0.20 0.20 0.20 0.17
Sones 15.9 15.6 14.1 12.9 11.5
1833
CFM 720 687 613 524 424
BHP 0.25 0.26 0.26 0.26 0.25
Sones 17.2 16.9 16.3 15.3 14.3
80-3 1/3
1926
CFM 760 728 660 579 486 346
BHP 0.29 0.30 0.30 0.30 0.30 0.27
Sones 18.4 18.3 17.8 17.1 16.9 13.9
2018
CFM 799 769 704 630 545 452 269
BHP 0.34 0.34 0.35 0.35 0.34 0.34 0.28
Sones 19.6 19.5 19.2 18.4 18.1 16.7 13.5
80-5 1/2
2164
CFM 861 833 774 708 633 550 442
BHP 0.41 0.42 0.43 0.43 0.43 0.42 0.40
Sones 21 21 21 20 19.6 19.2 17.6
2310
CFM 924 897 842 784 716 643 563 445
BHP 0.50 0.51 0.52 0.52 0.52 0.52 0.51 0.48
Sones 23 23 22 23 21 21 20 19.9
80-7 3/4
2478
CFM 995 969 919 865 807 743 671 597 486
BHP 0.62 0.63 0.63 0.64 0.65 0.65 0.64 0.63 0.59
Sones 25 25 24 25 24 23 22 22 23
2645
CFM 1065 1041 995 945 894 835 773 705 635 395
BHP 0.75 0.76 0.77 0.78 0.79 0.79 0.78 0.77 0.77 0.65
Sones 28 28 27 27 27 26 25 24 24 35
21
(533)
15
(381)
11
7
⁄8
(302)
15
(381)
1 (25)
*12
1
⁄2
(318)
*14
(356)
*15
1
⁄2
(394)
Damper size = 12 x 12 (305 x 305)
Unit weight** = 79 (36)
Housing thickness = 18 ga
MAX Bhp AT A GIVEN RPM = (rpm/2866)
3
MAXIMUM RPM = 2645
TIP SPEED (ft/min) = rpm x 2.928
MAX NEMA MOTOR FRAME SIZE = 145T
OUTLET VELOCITY (ft/min) = 1.0212 x cfm
0 500 1000 1500 2000
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
0 200 400 600 800 1000 1200
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Static Pressure in. wg
cfm
m
3
/hr
Static Pressure Pa
790
1160
1530
1900
2270
2645
3/4 hp
1/2 hp
1/3 hp
1/4 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.