Durable Polycarbonate Construction: Made from clear, impact-resistant polycarbonate for reliable performance against rain, snow, debris, and UV rays All-Weather Visibility: Transparent design allows natural sunlight into basement spaces while helping block out leaves, dirt, and moisture Easy To Installation: The cover fits securely onto most standard window wells with minimal effort Modern Low - Profile Design: Clean, sleek appearance complements your home's exterior while providing daily functional protection Wide Size Compatibility: Available in 9 size options to match various window well shapes and dimensions.