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1350
Static Pressure (in. wg)
Static Pressure (Pa)
Volume (cfm)
3
Volume (m /hr )
RPM (Belt)
RPM (Direct)
RPM (Vari-Green)
HP
Density 0.075 lb/ft
3
Density 1.2 kg/m
3
21
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. The sound ratings shown are loudness values in hemispherical sones at 5 ft. (1.5 m) in a hemispherical free field calculated per AMCA Standard 301.
Values shown are for installation type A: free inlet hemispherical sone levels.
Motor HP
Fan
RPM
Static Pressure in Inches wg
Belt Direct 0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.25
101 103
1/4
VG -Vari-Green is a direct drive brushless DC motor.
720
CFM
610 477
BHP
0.02 0.02
Sones
3.8 2.7
C-1/8 860
CFM
729 623 473
BHP
0.03 0.04 0.04
Sones
4.6 3.7 2.9
1000
CFM
848 753 654 481
BHP
0.05 0.05 0.06 0.05
Sones
5.5 4.8 4.4 3.4
B-1/6 1140
CFM
966 883 805 702 507
BHP
0.07 0.08 0.09 0.09 0.08
Sones
6.6 6.0 5.7 5.2 4.1
1245
CFM
1055 978 908 824 715
BHP
0.10 0.10 0.11 0.11 0.11
Sones
7.5 7.0 6.7 6.3 5.7
1350
CFM
1144 1073 1006 938 851 731
BHP
0.12 0.13 0.13 0.14 0.14 0.14
Sones
8.5 8.1 7.8 7.7 7.2 6.7
1450
CFM
1229 1162 1099 1041 965 878 750
BHP
0.15 0.16 0.16 0.17 0.17 0.17 0.17
Sones
9.3 9.0 8.7 8.4 8.0 7.5 6.9
1555
CFM
1318 1255 1196 1140 1079 1005 917 791
BHP
0.19 0.19 0.20 0.21 0.22 0.22 0.22 0.21
Sones
10.2 10.0 9.7 9.4 8.9 8.4 8.0 7.5
1660
CFM
1407 1348 1292 1238 1187 1122 1050 963 841
BHP
0.23 0.23 0.24 0.25 0.26 0.26 0.26 0.26 0.25
Sones
11.4 11.1 10.7 10.4 10.1 9.6 9.1 8.7 8.1
1/3
A-1/4 1725
CFM
1462 1405 1351 1298 1250 1193 1126 1052 955
BHP
0.25 0.26 0.27 0.28 0.29 0.29 0.29 0.29 0.29
Sones
12.2 11.9 11.5 11.2 10.9 10.3 10.0 9.5 9.0
1800
CFM
1525 1471 1419 1368 1321 1270 1209 1142 1065 793
BHP
0.29 0.30 0.30 0.31 0.33 0.33 0.33 0.33 0.33 0.30
Sones
13.3 12.8 12.5 12.4 12.2 11.4 10.9 10.6 10.2 9.3
Damper Size = 12 x 12
(305 x 305)
Roof Opening = 14 x 14 (368 x 368)
Shroud Thickness = 0.051 (1.3)
Motor Cover Thickness = 0.040 (1.0)
Curb Cap Thickness = 0.064 (1.6)
^Approximate Unit Weight G/GB = 54/61 lbs. (24/28 kg)
All dimensions in inches (millimeters). *May be greater depending on
motor. ^Weight shown is largest cataloged Open Drip-Proof motor.
1
3
⁄4 (44)
24
3
⁄8
(619)
4
3
⁄8 (111)
*23
3
⁄4
(603)
19
(483)
MAXIMUM BHP AT A GIVEN RPM = (RPM/2593)
3
MAXIMUM RPM = 1800
TIP SPEED (ft/min) = RPM x 2.913
MAXIMUM MOTOR FRAME SIZE = 56
Roof Downblast Exhaust
Belt & Direct Drive
GB-101 • G-103
C-860-RPM B-1140-RPM A-1725-RPM VG-1725-RPM
VG-
1/4
Direct Drive RPM