Mortite Gray 9-1/2 Oz Weatherstrip & Caulking Cord, 45 Ft. is a versatile and easy-to-use solution designed for a variety of applications. Known for its high quality, Mortite a do-it-yourself fingertip caulking experience that effectively seals windows while also serving multiple purposes such as a gasket material, sound deadener, insect barrier, crack filler, and general-purpose sealant. This product comes in a classic gray color that suits many uses, as well as a wood tone option that blends naturally with brown or wood finishes. Its reputation for reliability and adaptability makes it an excellent choice for a wide range of DIY projects. Model Number: F4