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SB-24 Belt Drive
Performance certified is for Model SB 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 are for installation type A: free inlet hemispherical sone levels .
*Sones shown apply to the highest cataloged CFM in black type at each fan RPM. For selections at other CFM and static
pressure points, refer to CAPS, the Computer Aided Product Selection Program.
Model Number
Motor
HP
Fan
RPM
Max
BHP *Sones
CFM / Static Pressure in Inches WG
0.00
0.10
0.125
0.15
0.20
0.25
0.30
0.375
0.50
0.625
0.75
1.00
Level 1 Performance
Max RPM L - 809 H - 1010
Max Motor Frame Size - 56
TS = RPM x 6.283
SB-1L24-4
1/4
513
0.19
10.3
4818
3784
558
0.25
11.0
5241
4402
3971
593
0.30
11.8
5569
4803
4551
4050
SB-1H24-4
1/4
674
0.17
10.2
3524
2894
2680
2416
1616
1155
821
785
0.30
13.3
4105
3618
3445
3267
2848
2105
1655
1133
444
SB-1L24-3
1/3
614
0.33
12.4
5766
5040
4807
4396
653
0.40
12.8
6133
5466
5256
5037
SB-1H24-3
1/3
829
0.33
14.8
4335
3877
3734
3568
3220
2595
2006
1445
769
877
0.36
16.1
4586
4157
4041
3887
3564
3179
2472
1845
1108
491
SB-1L24-5
1/2
704
0.50
13.8
6612
6000
5831
5628
4992
748
0.60
14.8
7025
6455
6300
6128
5723
4939
SB-1H24-5
1/2
961
0.55
18.5
5025
4641
4535
4428
4145
3846
3485
2574
1701
1103
540
1010
0.60
19.9
5281
4920
4819
4717
4471
4193
3902
3093
2108
1439
904
SB-1L24-7
3/4
775
0.67
15.5
7279
6732
6582
6430
6061
5383
809
0.76
17.4
7598
7079
6935
6792
6454
5948
5237
Level 2 Performance
Max RPM L - 986 H - 1148
Max Motor Frame Size - 145T
TS = RPM x 6.283
SB-2L24-5
1/2
688
0.47
13.5
6461
5833
5652
5444
4730
704
0.50
13.8
6612
6000
5831
5628
4992
748
0.60
14.8
7025
6455
6300
6128
5723
4939
SB-2H24-5
1/2
961
0.55
18.5
5025
4641
4535
4428
4145
3846
3485
2574
1701
1103
540
1010
0.60
19.9
5281
4920
4819
4717
4471
4193
3902
3093
2108
1439
904
SB-2L24-7
3/4
805
0.75
17.1
7560
7038
6894
6750
6408
5882
5170
856
0.90
21
8039
7555
7419
7284
6989
6654
6011
SB-2H24-7
3/4
1110
0.85
23
5804
5476
5392
5299
5115
4872
4619
4200
2975
2199
1601
626
1148
0.90
25
6003
5685
5606
5518
5340
5122
4882
4502
3343
2510
1853
910
SB-2L24-10
1
886
1.00
23
8321
7856
7726
7595
7326
7003
6512
942
1.20
28
8847
8409
8294
8171
7925
7643
7340
6476
SB-2L24-15
1
1
⁄
2
960
1.27
30
9016
8587
8476
8355
8114
7847
7549
6769
986
1.37
33
9260
8842
8738
8620
8385
8139
7849
7205
Level 3 Performance
Max RPM L - 1127 H - 1485
Max Motor Frame Size - 145T
TS = RPM x 6.283
SB-3L24-7
3/4
838
0.49
15.5
6598
6001
5836
5599
5047
4507
964
0.75
21
7590
7084
6945
6802
6429
5961
5459
4645
1024
0.90
24
8062
7592
7463
7329
7034
6634
6154
5492
SB-3H24-7
3/4
1099
0.50
18.5
5732
5377
5281
5184
4983
4756
4514
4095
2979
1263
0.78
22
6588
6286
6203
6119
5952
5776
5593
5277
4680
3710
2590
1330
0.90
24
6937
6650
6576
6496
6337
6174
6007
5721
5195
4494
3495
SB-3L24-10
1
1061
1.00
25
8354
7902
7778
7651
7392
7016
6588
5914
1127
1.20
27
8873
8454
8337
8220
7977
7686
7321
6668
5569
SB-3H24-10
1
1392
1.00
25
7261
6987
6918
6842
6690
6538
6378
6124
5639
5071
4170
1485
1.28
28
7746
7489
7425
7358
7216
7073
6928
6704
6271
5793
5208
3470
CFM values shown in black are the
most efficient selections. Values shown
in gray are not recommended.