The Reflected sill sealer is a closed- cell product, designed to reduce air leakage between the foundation wall and the sill plate. It can additionally be used to seal around window and door frames. The product is applicable for residential and commercial construction, slab on grade and in crawl spaces or basements. The Reflected sill sealer is available through contractor sales groups. The product consists of a ribbed polyethylene closed-cell foamRefer to the sill seal webpage for additional information5.5 inch x 50 feet size