The 3-1/2" X 100' FIBER GLASS SLEEVE from SEALFAST is engineered for superior insulation and protection. This fiberglass sleeve is designed to withstand high temperatures and harsh conditions, making it ideal for industrial applications. With a generous length of 100 feet, it provides extensive coverage for various projects. The material is compliant with industry standards, ensuring reliability and safety in demanding environments. This sleeve is perfect for use in electrical insulation, pipe wrapping, and other protective applications.