Specification Sheet

463
Gravity Intake 2:1 Ratio Cont.
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.
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
24.00 48 x 72 92 116 20 15000 21192 23712 28440 30000
26.00 48 x 78 94 126 20 16250 22958 25688 30810 32500
28.00 48 x 84 95 131 20 17500 24724 27664 33180 35000
30.00 48 x 90 95 140 20 18750 26490 29640 35550 37500
32.00 48 x 96 96 144 20 20000 28256 31616 37920 40000
34.00 48 x 102 96 155 20 21250 30022 33592 40290 42500
36.00 48 x 108 95 165 20 22500 31788 35568 42660 45000
38.00 48 x 114 97 172 20 23750 33554 37544 45030 47500
20.25 54 x 54 95 95 23 12656 17881 20007 23996 25313
22.50 54 x 60 97 103 23 14063 19868 22230 26663 28125
24.75 54 x 66 98 110 23 15469 21854 24453 29329 30938
27.00 54 x 72 98
121 23 16875 23841 26676 31995 33750
29.25 54 x 78 98 124 23 18281 25828 28899 34661 36563
31.50 54 x 84 98 140 23 19688 27815 31122 37328 39375
33.75 54 x 90 98 150 23 21094 29801 33345 39994 42188
36.00 54 x 96 98 160 23 22500 31788 35568 42660 45000
38.25 54 x 102 98 170 23 23906 33775 37791 45326 47813
40.50 54 x 108 98 179 23 25313 35762 40014 47993 50625
42.75 54 x 114 98 179 25 26719 37748 42237 50659 53438
25.00 60 x 60 95 115 25 15625 22075 24700 29625 31250
27.50 60 x 66 96 124 25 17188 24283 27170 32588 34375
30.00 60 x 72 109 121 25 18750 26490 29640 35550 37500
32.50 60 x 78 111 131 25 20313 28698 32110 38513 40625
35.00 60 x 84 113 137 25 21875 30905 34580 41475 43750
37.50 60 x 90 114 140 25 23438 33113
37050 44438 46875
40.00 60 x 96 115 151 25 25000 35320 39520 47400 50000
42.50 60 x 102 115 155 25 26563 37528 41990 50363 53125
45.00 60 x 108 118 166 25 28125 39735 44460 53325 56250
47.50 60 x 114 118 175 25 29688 41943 46930 56288 59375
50.00 60 x 120 118 184 25 31250 44150 49400 59250 62500
30.25 66 x 66 98 134 25 18906 26711 29887 35846 37813
33.00 66 x 72 98 134 25 20625 29139 32604 39105 41250
35.75 66 x 78 117 136 25 22344 31567 35321 42364 44688
38.50 66 x 84 117 143 25 24063 33996 38038 45623 48125
41.25 66 x 90 117 150 25 25781 36424 40755 48881 51563
44.00 66 x 96 117 162 25 24500 38852 43472 52140 55000
46.75 66 x 102 117 173 26 29219 41280 46189 55399 58438
49.50 66 x 108 117 182 26 30938 43709 48906 58658 61875
52.25
66 x 114 117 193 26 32656 46137 51623 61916 65313
55.00 66 x 120 124 192 28 34375 48565 54340 65175 68750
57.75 66 x 126 130 192 28 36094 50993 57057 68434 72188
60.50 66 x 132 138 190 28 37813 53422 59774 71693 75625
36.00 72 x 72 117 137 25 22500 31788 35568 42660 45000
39.00 72 x 78 126 134 28 24375 34437 38532 46215 48750
42.00 72 x 84 130 142 29 26250 37086 41496 49770 52500
45.00 72 x 90 132 148 28 28125 39735 44460 53325 56250
48.00 72 x 96 133 157 29 30000 42384 47424 56880 60000
51.00 72 x 102 140 170 28 31875 45033 50388 60435 63750
54.00 72 x 108 136 172 29 33750 47682 53352 63990 67500
57.00 72 x 114 140 178 28 35625 50331 56316 67545 71250
60.00 72 x 120 139 187 29 37500 52980 59280 71100 75000
63.00 72 x 126 144 190 29
39375 55629 62244 74655 78750
66.00 72 x 132 144 198 29 41250 58278 65208 78210 82500
69.00 72 x 138 144 208 29 43125 60927 68172 81765 86250
72.00 72 x 144 144 216 29 45000 63576 71136 85320 90000
MODEL BGH
FABRICATED GRAVITY RELIEF/INTAKE VENTILATORS