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Performance certified is for installation type B: Free inlet, Ducted outlet. 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 Standard 301. Values shown are for installation
type B: free inlet hemispherical fan sone levels.
0 500 1000 1500 2000 2500 3000
0
50
100
150
200
250
300
350
400
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
0 400 800 1200 1600 2000
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Static Pressure in. wg
cfm
m
3
/hr
Static Pressure Pa
1725
1140
860
RPM
Density 0.075 lb/ft
3
SQ 120 - Direct Drive
0 0.125 0.25 0.375 0.5 0.625 0.75 1 1.25 1.375
1/8 860
CFM 971 843 704
BHP 0.051 0.055 0.059
Sones 4.4 4.1 3.3
SQ-120-B 1/6 1140
CFM 1287 1189 1094 992 873 692
BHP 0.12 0.12 0.13 0.14 0.14 0.13
Sones 7.4 7.2 7.0 6.3 5.9 5.8
1/2 1725
CFM 1948 1883 1818 1754 1692 1628 1562 1416 1239 1128
BHP 0.41 0.42 0.42 0.44 0.45 0.46 0.46 0.48 0.48 0.47
Sones 14.7 14.1 13.8 13.6 13.5 13.4 13.2 12.6 11.9 11.7
Damper size = 16 x 16 (406 x 406)
Unit weight** = 67 (30)
Housing thickness = 20 ga
Outlet velocity = 0.571 x cfm
Dimensions shown in inches (millimeters) and weight is
shown in pounds (kilograms).
*May be greater depending on motor.
**Weight shown is largest cataloged Open Drip Proof motor.
21
(533)
19
(483)
*15
7
⁄8
(403)
19
(483)
