The 44" x 19" x 15". Plastic Window Well Cover is a heavy-duty cover manufactured from plastic. It helps keep your window well clean by keeping out rain, snow, small animals and debris. The easy-to-install cover is designed to fit window wells of 40 in. or less in length and 16 in. or less in projection from the house. The cover adds to the energy efficiency of your basement and allows light to enter your basement window.