Custom Window Well Covers HandyManny's Basement Window Well Covers are made from the Highest Quality GE Lexan material and Anodized Aluminum, That is Capable of Supporting over 800 lbs. Our window well covers are just as strong as a Metal Grate, but keep out animals, debris, rain, snow, and more important for anyone falling into a window well. Allows in 98% of Natural light that your window wells were designed for. Each Window Well Cover is Custom-Made to Ensure a Perfect fit for any size or Shape Window Well.