Vent is designed to remove "flutter"
Back plate is square, which is simpler to cut around.
Includes metal tube
Face: 7.5"x 8.5"
Exhaust Fans, Dryer Vents, and more
Net Free Area: 12.5 sqin
Product is individually shrink-wrapped, so it arrives to the job site clean.
0.75", 1", 1.25", 1.5"
Can be installed with vinyl, aluminum, and solid siding.
The flapper on our block is designed to remove "flutter", which happens as wind travels past the vent opening.