Product details:
Vents your attic & building. Invisible after installation, easy to install. Meets all venting requirements when installed properly. Helps prevent rain & snow from getting into attic. Shingle roofs Vents your attic & building Invisible after installation Easy to install Meets all venting requirements when installed properly Helps prevent rain & snow from getting into attic Measures: 20' x 10-1/2 x 3/4".