Performance certified is for installation type A: Free inlet, Free 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 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. The AMCA Certified Ratings Seal applies to sone ratings only.
1
21
(533)
35
3
⁄
8
(899)
28
5
⁄
8
*
(727)
30
(762)
1
3
⁄
4
(44)
USGF-180 - Belt Drive
Model
Number
Motor
hp
Fan
rpm
CFM / Static Pressure in inches wg
0
0.125
0.25
0.5
0.75
1
1.25
1.5
1.75
2
USGF-180-4
1/4
630
CFM
2380
2154
1861
BHP
0.13
0.15
0.16
Sones
7.1
6.4
5.5
745
CFM
2815
2617
2448
1763
BHP
0.22
0.24
0.26
0.25
Sones
9.2
8.6
8.1
7.1
USGF-180-3
1/3
820
CFM
3098
2916
2759
2257
BHP
0.30
0.32
0.34
0.34
Sones
11.2
10.4
10.0
9.0
USGF-180-5
1/2
940
CFM
3551
3389
3243
2879
2363
BHP
0.45
0.47
0.49
0.52
0.50
Sones
13.8
13.5
13.1
12.4
11.2
USGF-180-7
3/4
1010
CFM
3816
3664
3526
3242
2799
2105
BHP
0.56
0.58
0.61
0.65
0.64
0.58
Sones
15.4
15.2
14.9
14.7
13.7
11.8
1075
CFM
4061
3919
3786
3554
3141
2652
BHP
0.67
0.70
0.73
0.78
0.78
0.75
Sones
16.5
16.2
15.8
151.5
14.7
13.3
USGF-180-10
1
1185
CFM
4477
4348
4224
4005
3703
3336
2841
BHP
0.90
0.93
0.96
1.01
1.04
1.04
0.99
Sones
18.5
17.9
17.1
16.5
16.0
15.2
14.4
USGF-180-15
11/2
1275
CFM
4817
4697
4578
4369
4163
3799
3437
2930
BHP
1.12
1.15
1.19
1.24
1.30
1.30
1.28
1.22
Sones
21
20
19.5
18.7
18.2
17.5
16.7
15.9
1360
CFM
5138
5026
4913
4710
4532
4232
3912
3537
3023
BHP
1.36
1.39
1.43
1.49
1.56
1.58
1.58
1.54
1.46
Sones
23
23
22
21
21
20
19.2
18.3
17.3
USGF-180-20
2
1430
CFM
5402
5296
5189
4993
4819
4593
4270
3968
3567
3001
BHP
1.58
1.62
1.66
1.72
1.79
1.83
1.83
1.83
1.76
1.66
Sones
25
25
25
24
23
22
22
21
19.5
18.2
1495
CFM
5648
5546
5443
5254
5082
4921
4598
4313
3983
3564
BHP
1.80
1.84
1.89
1.96
2.02
2.10
2.10
2.10
2.06
1.99
Sones
28
27
27
26
25
25
24
23
22
21
Do
no
t s
ele
ct
to
th
e
le
ft
o
f t
hi
s s
ys
te
m
c
ur
ve
H-
W
.G.
MAXIMUM BHP AT A GIVEN RPM = (RPM/1167)
3
MAXIMUM RPM = 1495
TIP SPEED (ft/min.) = RPM x 4.843
MAXIMUM MOTOR FRAME SIZE = 184T
AVERAGE DISCHARGE VELOCITY (FPM) = CFM/2.92
Roof Opening = 201/2 x 201/2
(521 x 521)
Windband Thickness = 0.051
(1.3)
Motor Cover Thickness = 0.040
(1.0)
Curb Cap Thickness = 0.064
(1.6)
^Approximate Unit Weight = 190 lb.
(86 kg)
All dimensions in inches
(millimeters)
.
*May be greater depending on motor.
^Weight shown is largest cataloged Open Drip Proof motor.
