Model 1900B- Industrial Roof Ventilator-Belt Drive

DIMENSIONS (subject to change without notice)

MODEL A B D E G HP
1924 30” 54 “ x 64” 41 1/2” 39” 28” 1/4-1
1930 36” 60” x 76” 41 1/2” 45” 28” 1/3-1 1/2
1936 42” 72” x 82” 45 1/2”” 51” 30” 1/3-2
1942 48” 80” x 89” 45 1/2” 57” 30” 1/2-3
1948 54” 87” x 95” 49 1/2” 63” 32” 3/4-5
1954 60” 92” x 98 50 1/2” 69” 32” 1-5
1960 66” 90” x 107” 50 1/2” 75” 34” 1-7 1/2
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Description

APPLICATION

Designed for general ventilation needs. Available for intake or exhaust air flow and belt driven or direct driven construction.

FEATURES AND BENEFITS

  • Heavy gauge continuously welded curb cap provides watertight
  • Standard construction includes rugged fabricated steel propellers; non-sparking cast aluminum propellers available for hazardous
  • Standard construction is belt driven but is also available in direct drive if required.
  • Can be built for supply or exhaust with special reversible propeller.
  • Fabricated aluminum weather hood with removable birdscreen. Easily opened and fully supported in place for full access to fan inside.

MODEL 1900B – INDUSTRIAL ROOF VENTILATOR – BELT DRIVE PERFORMANCE DATA

CAPACITY C.F.M.
Blade Dia. Model Prop HP RPM Free Air 1/8″ SP 1/4″ SP 3/8″ SP
24″ 1924-B-1/4 S24 1/4 780 4222 2807 1576 800
24″ 1924-B-1/2 S24 1/2 980 5716 5061 4043 2600
24″ 1924-B-3/4 S24 3/4 1140 6648 6144 5518 4413
24″ 1924-B-1 X24 1 1250 6696 6271 5600 4464
30″ 1930-B-1/3 S30 1/3 595 6380 3617 1808 767
30″ 1930-B-1/2 S30 1/2 640 7170 4486 2724 1373
30″ 1930-B-3/4 S30 3/4 770 9192 7657 5108 3833
30″ 1930-B-1 X30 1 975 9959 8626 6828 5184
30″ 1930-B-1 1/2 X30 1 1/2 1140 11867 11112 9656 8135
36″ 1936-B-1/3 S36 1/3 460 6992 3722 1825 —
36″ 1936-B-1/2 S36 1/2 530 8821 5985 3642 2084
36″ 1936-B-3/4 S36 3/4 605 10583 8563 5545 4017
36″ 1936-B-1 S36 1 665 11932 10299 7913 5729
36″ 1936-B-1 1/2 X36 1 1/2 720 12012 9579 7240 5000
36″ 1936-B-2 X36 2 870 15376 14088 11942 9691
42″ 1942-B-1/2 S42 1/2 390 9352 4957 3050 1642
42″ 1942-B-3/4 S42 3/4 435 11530 7633 4847 3311
42″ 1942-B-1 S42 1 490 13194 10438 6414 4668
42″ 1942-B-1 1/2 S42 1 1/2 550 15421 13117 9980 7289
42″ 1942-B-2 X42 2 725 19128 17503 15264 11319
42″ 1942-B-3 X42 3 830 22296 20984 19406 17290
48″ 1948-B-3/4 S48 3/4 370 13700 7389 4283 17290
48″ 1948-B-1 S48 1 410 16078 10908 6378 4037
48″ 1948-B-1 1/2 S48 1 1/2 465 19010 14991 10950 7081
48″ 1948-B-2 S48 2 520 21943 19080 15532 10125
48″ 1948-B-3 X48 3 680 25683 23615 20820 16930
48″ 1948-B-5 X48 5 800 30900 29290 27380 25000
54″ 1954-B-1 X54 1 410 20588 17500 11640 9600
54″ 1954-B-1 1/2 X54 1 1/2 450 22600 19300 12782 10316
54″ 1954-B-2 X54 2 480 24312 20660 13642 11010
54″ 1954-B-3 X54 3 550 28722 25830 21730 15420
54″ 1954-B-5 X54 5 660 35238 32843 30298 26538
60″ 1960-B-1 X60 1 280 19161 12850 — —
60″ 1960-B-1 1/2 X60 1 1/2 340 23283 15624 11434 8000
60″ 1960-B-2 X60 2 390 26710 17924 13118 9380
60″ 1960-B-3 X60 3 450 32356 25324 18705 15013
60″ 1960-B-5 X60 5 540 41232 35819 29000 23237
60″ 1960-B-7 1/2 X60 7 1/2 610 47000 43000 40000 32000