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Your cart is empty.Rust-free vari-pitch louver. Adjustable roof pitch. 8" x 8" perma-coated screen. Wide mounting flange. Pivoting blades provide maximum weather protection. 57 to 117 square inches of net free area for 905 86 to 181 square inches of net free area for 906 122 to 255 square inches of net free area for 907 211 to 439 square inches of net free area for 909 263 to 548 square inches of net free area for 910 and 320 to 668 square inches of net free area for 911.
Deborah
Reviewed in the United States on September 6, 2019
had to return it
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