Air Vent 85160 Aluminum Roof Mounted Vent, Square, Gray BF20 Impulse arm saves water by

Impulse arm saves water by eliminating back & side splash

easy-to-install

Width: 1/4" - 19/64"

KSM151 & KSM152

Air Vent 85160 Aluminum Roof Mounted Vent, Square, Gray BF20 Impulse arm saves water byThese covered openings allow air to escape the attic. Several of these vents are usually required to properly ventilate the attic. They should be placed evenly across the roof. Choose from metal or plastic in round, square or slant back designs. UH50WW Square aluminum roof mounted vent Weatherwood 50 sqin of net free area 9" diameter opening As hot air rises the vent allows the hot air to escape Should be installed up towards peak of roof for maximum