Copper Ducted Roof Vent
|
Size: | Free Area (sq in): |
Without Damper: |
With Damper: |
4" | 12.5 | ||
5" | 19.6 | ||
6" | 28.25 | ||
7" | 38.5 | ||
8" | 50.25 | ||
9" | 63.5 | ||
10" | 78.5 | ||
11" | 95 | ||
12" | 113 |
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