This is a 4 season synthetic down/ Thinsulate cover designed for a roof vent. Attached by magnets.
Vent size 14"X14"
Finish size 17"X17"X1"
Please call 208-457-2726 for a custom size.
If you are not completely satisfied with this product, contact me so I can fix the problem and continue to provide the best hand made window cover on the market. Because of customer feedback, we are continuing to improve our covers every day. Everything is hand made by me in Coeur d'Alene, Idaho.