Features: Natural light: Despite its purpose to maintain protection, this window well cover does not block natural light. Its clear polycarbonate cover ensures that you can enjoy an ample amount of daylight in your basement, offering you the dual advantage of security and brightness. UV resistant for longevity: Equipped with advanced UV resistant technology, our window well covers prevent yellowing, ensuring they remain clear and maintain their integrity over time. This feature is crucial for a long-lasting cover for basement window wells. Specifications: Material: polycarbonate Color: clear Size: 40 x 16 inches/ 101.6 x 40.64 cm(W x L), 0.18 inch/ 4.5 mm in thickness Package includes: 1 x Egress window cover 2 x Aluminum strips 5 x Stainless steel clamps Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.