|
Size Chart For U-740 UL Listed and FM Approved |
|
Catalog No. |
Inside Curb (B x B) |
Sq. Ft. of Opening |
Sq. Ft. of Effective Vent Area |
|
-4848 |
48" X 48" |
16 |
13.4 |
|
-4860 |
48" X 60" |
20 |
16.8 |
|
-4872 |
48" X 72" |
24 |
20.3 |
|
-4884 |
48" X 84" |
28 |
23.8 |
|
-4890 |
48" X 90" |
30 |
25.8 |
|
-4896 |
48" X 96" |
32 |
27.3 |
|
-6696 |
66" X 96" |
44 |
38 |
|
Size Chart For U-740 FM Approved Only |
|
Catalog No. |
Inside Curb (B x B) |
Sq. Ft. of Opening |
Sq. Ft. of Effective Vent Area |
|
-66108 |
66" X 108" |
49.5 |
41.5 |
|
-66120 |
66" X 120" |
55 |
47 |
|
-66132 |
66" X 132" |
60.5 |
52.5 |
|
-66144 |
66" X 144" |
66 |
58 |
|
|
|
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Hi Pro Intl.
5049 S National Drive
Knoxville, TN. 37914
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1-800-947-0997