Improves basement insulation. Keeps out rain, snow, and debris. Durable impact-resistant plastic. 5 year warranty. Wall mount installation. No clips necessary. Elongated. Type H. 43" L. x 14" W. x 12" H. May be used with area wall Model No. SS3712-12 (SKU 101008), SS3712-18 (SKU 101017), or SS3712-24 (SKU 101026).