This Owens Corning ProPink ComfortSeal Sill Gasket is the perfect solution for your insulation needs. With a thickness of 0.25 inches and a width of 3.5 inches, it is suitable for both exterior and interior walls. The gasket is made of fiberglass material and is compatible with wood, tile, and metal installation surfaces. Each roll contains 50 feet of the gasket, with a width of 3.5 inches and a thickness of 0.25 inches. It is unfaced and comes in a beautiful pink color. This insulation roll is a great addition to your building materials and supplies, and is made in the United States.