Specification Sheet

460
Gravity Relief 1:1 Ratio Cont.
Dimensional Data Throat Velocity in FPM @ Static Pressure - Relief
Throat
Area
Throat Size Hood Size
536 758 848 1073 1200
CFM @ Static Pressure - Relief
A x B C D E .050 .100 .125 .200 .250
24.00 48 x 72 73 97 17 12864 18192 20352 25752 28800
26.00 48 x 78 74 103 17 13936 19708 22048 27898 31200
28.00 48 x 84 75 111 17 15008 21224 23744 30044 33600
30.00 48 x 90 75 117 17 16080 22740 25440 32190 36000
32.00 48 x 96 75 123 17 17152 24256 27136 34336 38400
34.00 48 x 102 75 129 17 18224 25772 28832 36582 40800
36.00 48 x 108 77 137 17 19296 27288 30528 38628 43200
38.00 48 x 114 77 146 17 20368 28804 32224 40774 45600
20.25 54 x 54 77 77 19 10854 15350 17172 21728 24300
22.50 54 x 60 79 85 19 12060 17055 19080 24143 27000
24.75 54 x 66 79 91 19 13266 18761 20988 26557 29700
27.00 54 x 72 80
98 19 14472 20466 22896 28971 32400
29.25 54 x 78 81 104 19 15678 22172 24804 31385 35100
31.50 54 x 84 82 112 19 16884 23877 26712 33800 37800
33.75 54 x 90 82 119 19 18090 25583 28620 36214 40500
36.00 54 x 96 83 125 19 19296 27288 30528 38628 43200
38.25 54 x 102 84 134 19 20502 28994 32436 41042 45900
40.50 54 x 108 85 139 19 21708 30699 34344 43457 48600
42.75 54 x 114 85 144 19 22914 32405 36252 45871 51300
25.00 60 x 60 86 86 21 13400 18950 21200 26825 30000
27.50 60 x 66 87 93 21 14740 20845 23320 29508 33000
30.00 60 x 72 88 100 21 16080 22740 25440 32190 36000
32.50 60 x 78 89 106 21 17420 24635 27560 34873 39000
35.00 60 x 84 90 114 21 18760 26530 29680 37555 42000
37.50 60 x 90 90 120 21 20100 28425
31800 40238 45000
40.00 60 x 96 91 127 21 21440 30320 33920 42920 48000
42.50 60 x 102 92 134 21 22780 32215 36040 45603 51000
45.00 60 x 108 93 141 21 24120 34110 38160 48285 54000
47.50 60 x 114 93 148 21 25460 36005 40280 50968 57000
50.00 60 x 120 94 154 21 26800 37900 42400 53650 60000
30.25 66 x 66 94 94 21 16214 22930 25652 32458 36300
33.00 66 x 72 94 94 21 17688 25014 27984 35409 39600
35.75 66 x 78 95 105 21 19162 27099 30316 38360 42900
38.50 66 x 84 97 115 21 20636 29183 32648 41311 46200
41.25 66 x 90 97 123 21 22110 31268 34980 44261 49500
44.00 66 x 96 97 131 21 23584 33352 37312 47212 52800
46.75 66 x 102 97 139 21 25058 35437 39644 50163 56100
49.50 66 x 108 97 147 21 26532 37521 41976 53114 59400
52.25
66 x 114 97 156 21 28006 39606 44308 56064 62700
55.00 66 x 120 96 165 21 29480 41690 46640 59015 66000
57.75 66 x 126 96 174 21 30954 43775 48972 61966 69300
60.50 66 x 132 96 182 21 32428 45859 51304 64917 72600
36.00 72 x 72 96 110 21 19296 27288 30528 38628 43200
39.00 72 x 78 96 118 21 20904 29562 33072 41847 46800
42.00 72 x 84 96 126 21 22512 31836 35616 45066 50400
45.00 72 x 90 96 134 21 24120 34110 38160 48285 54000
48.00 72 x 96 96 143 21 25728 36384 40704 51504 57600
51.00 72 x 102 96 153 21 27336 38658 43248 54723 61200
54.00 72 x 108 96 163 21 28944 40932 45792 57942 64800
57.00 72 x 114 96 172 21 30552 43206 48336 61161 68400
60.00 72 x 120 96 180 21 32160 45480 50880 64380 72000
63.00 72 x 126 108 168 23
33768 47754 53424 67599 75600
66.00 72 x 132 108 176 23 35376 50028 55968 70818 79200
69.00 72 x 138 108 184 23 36984 52302 58512 74037 82800
72.00 72 x 144 108 192 23 38592 54576 61056 77256 86400
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