Specification Sheet

462
Gravity Intake 2:1 Ratio Cont.
Dimensional Data Throat Velocity in FPM @ Static Pressure - Intake
Throat
Area
Throat Size Hood Size
312/625 441/883 592/998 592/1185 625/1250
CFM @ Static Pressure - Intake
A x B C D E
.050 .100 .125 .180 .200
7.50 20 x 54 43 77 11 4688 6623 7410 8888 9375
8.33 20 x 60 44 84 11 5208 7358 8233 9875 10417
9.17 20 x 66 45 91 11 5729 8094 9057 10863 11458
10.00 20 x 72 45 97 11 6250 8830 9880 11850 12500
10.83 20 x 78 46 106 11 6771 9956 10703 12838 13542
11.67 20 x 84 46 110 11 7292 10302 11527 13825 14583
4.00 24 x 24 42 42 11 2500 3532 3952 4740 5000
5.00 24 x 30 44 50 11 3125 4415 4940 5925 6250
6.00 24 x 36 46 58 11 3750 5298 5928 7110 7500
7.00 24 x 42 48 66 11 4375 6181 6916 8295 8750
8.00 24 x 48 49 73 11 5000 7064 7904 9480 10000
9.00 24 x 54 50
80 11 5625 7947 8892 10665 11250
10.00 24 x 60 52 88 11 6250 8830 9880 11850 12500
11.00 24 x 66 52 94 11 6875 9713 10868 13035 13750
12.00 24 x 72 52 100 11 7500 10596 11856 14220 15000
13.00 24 x 78 53 109 11 8125 11479 12844 15405 16250
14.00 24 x 84 54 114 11 8750 12362 13832 16590 17500
15.00 24 x 90 55 127 11 9375 13245 14820 17775 18750
6.25 30 x 30 53 53 13 3906 5519 6175 7406 7813
7.50 30 x 36 55 61 13 4688 6623 7410 8888 9375
8.75 30 x 42 57 69 13 5469 7726 8645 10369 10938
10.00 30 x 48 57 76 13 6250 8830 9880 11850 12500
11.25 30 x 54 60 84 13 7031 9934 11115 13331 14063
12.50 30 x 60 61 91 13 7813 11038 12350 14813 15625
13.75 30 x 66 62 98 13 8594 12141
13585 16294 17188
15.00 30 x 72 63 105 13 9375 13245 14820 17775 18750
16.25 30 x 78 64 114 13 10156 14349 16055 19256 20313
17.50 30 x 84 65 119 13 10938 15453 17290 20738 21875
18.75 30 x 90 66 132 13 11719 16556 18525 22219 23438
9.00 36 x 36 63 63 15 5625 7947 8892 10665 11250
10.50 36 x 42 66 72 15 6563 9272 10374 12443 13125
12.00 36 x 48 67 79 15 7500 10596 11856 14220 15000
13.50 36 x 54 69 87 15 8438 11921 13338 15998 16875
15.00 36 x 60 70 94 15 9375 13245 14820 17775 18750
16.50 36 x 66 71 101 15 10313 14570 16302 19553 20625
18.00 36 x 72 72 108 15 11250 15894 17784 21330 22500
19.50 36 x 78 74 117 15 12188 17219 19266 23108 24375
21.00 36 x 84 75 123 15 13125 18543 20748 24885 26250
22.50
36 x 90 75 130 15 14063 19868 22230 26663 28125
24.00 36 x 96 77 137 15 15000 21192 23712 28440 30000
25.50 36 x 102 78 150 15 15938 22517 25194 30218 31875
12.25 42 x 42 74 74 18 7656 10817 12103 14516 15313
15.75 42 x 54 78 90 18 9844 13907 15561 18664 19688
17.50 42 x 60 80 98 18 10938 15453 17290 20738 21875
19.25 42 x 66 81 105 18 12031 16998 19019 22811 24063
21.00 42 x 72 83 113 18 13125 18543 20748 24885 26250
22.75 42 x 78 83 122 18 14219 20088 22477 26959 28438
24.50 42 x 84 84 126 18 15313 21634 24206 29033 30625
26.25 42 x 90 85 135 18 16406 23179 25935 31106 32813
28.00 42 x 96 87 141 18 17500 24724 27664 33180 35000
29.75 42 x 102 88 150 18 18594 26269 29393 35254 37188
31.50 42 x 108 89 155 18
19688 27815 31122 37328 39375
16.00 48 x 48 84 84 20 10000 14128 15808 18960 20000
18.00 48 x 54 87 93 20 11250 15894 17784 21330 22500
20.00 48 x 60 88 100 20 12500 17660 19760 23700 25000
22.00 48 x 66 89 107 20 13750 19426 21736 26070 27500
Hoods wider than 98" will ship knocked down.
Insect Screens - Add .10 to area shown in table. Damper - Add .10 to area shown in table. Filters - Add .17 to area shown in table.
MODEL BGH
FABRICATED GRAVITY RELIEF/INTAKE VENTILATORS