I needed a storm proof window exhaust fan for a shed. I live in Florida and it's summer and it's hot.Bought three of these plus three 3 elbows. Screwed them to a piece of wood that fits the window and had three holes cut. Secured wood in window and painted/caulked as needed. Added small fans on the inside. It runs 24/7 and I don't care if it rains.These flanges did the job perfectly and the price is great.
Rating: [5 of 5 Stars!]