Specification Sheet

251
Outlet Velocity = CFM x 0.09
Tip Speed = RPM x 8.017
Maximum Motor Frame Size = 215T
Maximum RPM = 1120
Maximum BHP at a Given RPM = (RPM/572)
3
Unit Specications
Housing Metal Thickness = 16 GA.
Approximate Weight = 420 lbs.
CFM / BHP @ Static Pressure / Sones
Drive Range RPM HP
Tip
Speed
3/4 1 1-1/4 1-1/2 1-3/4 2 2-1/4 2-1/2 2-3/4 3 3-1/4 3-1/2
5295
1.26/12.0
3906
1.18/10.8
- - - - - - - - - -
DP 79
615 1-1/2 4931
5739
1.42/13.2
4646
1.39/12.0
- - - - - - - - - -
DP 80
640 1-1/2 5131
6078
1.55/14.2
5117
1.55/13.0
- - - - - - - - - - 660 1-1/2 5292
6565
1.75/15.8
5735
1.78/14.5
4452
1.68/13.3
- - - - - - - - -
DP 81
690 2 5532
6880
1.90/16.9
6112
1.94/15.6
5051
1.89/14.4
- - - - - - - - - 710 2 5692
7112
2.01/17.7
6382
2.06/16.5
5426
2.04/15.2
- - - - - - - - - 725 2 5813
7265
2.09/18.3
6558
2.15/17.0
5657
2.13/15.7
3916
1.87/14.9
- - - - - - - - 735 2 5893
7715
2.34/19.7
7066
2.41/18.7
6286
2.43/17.5
5172
2.33/16.3
- - - - - - - - 765 3 6133
8011
2.51/21
7393
2.59/19.8
6670
2.62/18.6
5720
2.57/17.4
- - - - - - - - 785 3 6494
8375
2.73/22
7790
2.83/21
7125
2.88/19.9
6304
2.86/18.8
5034
2.68/17.8
- - - - - - - 810 3 6494
8663
2.92/23
8102
3.03/22
7474
3.09/21
6725
3.10/19.9
5696
2.99/18.9
- - - - - - - 830 3 6655
8734
2.97/23
8179
3.08/23
7559
3.14/21
6826
3.15/20
5838
3.06/19.2
- - - - - - -
DP 82
835 5 6695
9651
3.65/26
9155
3.79/26
8622
3.89/25
8028
3.94/24
7334
3.95/23
6439
3.86/22
4783
3.43/21
- - - - - 900 5 7216
9929
3.88/27
9448
4.02/27
8935
4.13/26
8371
4.20/25
7726
4.22/24
6933
4.17/23
5767
3.94/22
- - - - - 920 5 7376
10273
4.18/28
9810
4.33/28
9319
4.45/28
8787
4.54/27
8191
4.58/26
7488
4.56/25
6569
4.43/24
4737
3.86/23
- - - -
DP 83
945 5 7577
10684
4.56/30
10240
4.72/30
9773
4.85/29
9272
4.95/29
8722
5.01/27
8095
5.03/26
7335
4.96/25
6268
4.74/24
- - - - 975 5 7817
10888
4.76/31
10453
4.92/30
9996
5.06/30
9509
5.17/30
8979
5.24/28
8382
5.26/27
7676
5.22/26
6748
5.06/25
4850
4.38/25
- - - 990 5 7937
11295
5.17/32
10875
5.34/32
10438
5.49/32
9976
5.62/31
9479
5.70/30
8932
5.75/29
8306
5.75/28
7547
5.66/27
6482
5.40/26
- - - 1020 7 1/2 8178
11631
5.53/34
11224
5.71/33
10802
5.87/33
10358
6.00/33
9885
6.11/32
9370
6.17/31
8795
6.19/30
8123
6.15/29
7270
5.99/28
5883
5.52/28
- - 1045 7 1/2 8378
12233
6.21/36
11846
6.42/36
11447
6.59/36
11032
6.75/36
10594
6.87/35
10127
6.96/34
9618
7.02/33
9049
7.02/32
8386
6.96/31
7552
6.79/30
6248
6.31/30
- 1090 7 1/2 8739
12499
6.54/38
12121
6.75/37
11731
6.93/37
11327
7.09/37
10903
7.22/37
10452
7.33/36
9966
7.39/35
9430
7.42/33
8820
7.39/32
8085
7.27/32
7088
6.97/31
- 1110 7 1/2 8900
12632
6.71/38
12257
6.92/38
11872
7.11/38
11473
7.27/37
11055
7.41/37
10613
7.51/36
10137
7.59/35
9616
7.62/34
9028
7.60/33
8331
7.50/32
7424
7.26/32
5772
6.51/31
1120 7 1/2 8980
R
®
AIR
MOVEMENT
AND CONTROL
ASSOCIATION
INTERNATIONAL, INC.
AIR
PERFORMANCE
SOUND
and
Performance certied is for installation type B - free inlet, ducted outlet.
Power Ratings (BHP) does not include drive losses.
Performance ratings do not include the effects of appurtenances in the airstream.
The sound ratings shown are loudness values in fan sones @ 5' (1.5m) in a hemispherical
free eld calculated per AMCA Standard 301. Values shown are for installation type A - free
inlet fan sone levels.
SQBHP 30
S&P USA Ventilation Systems, LLC., Div.
of Soler & Palau Ventilation Group, certi-
es that the Models SQB shown herein
are licensed to bear the AMCA Seal. The
ratings shown are based on test and
procedures performed in accordance with
AMCA Publication 211 and AMCA Publica-
tion 311 and comply with the requirement
of the AMCA Certied Ratings Program.
STANDARD 705
MODEL SQB
BELT DRIVE SQUARE INLINE CENTRIFUGAL DUCT FAN
MODEL SQB
BELT DRIVE SQUARE INLINE CENTRIFUGAL DUCT FAN