M-D Building Products 43846 Thermal Blend All Climate Wave Profile Product Description Thermal blend weather-strip, all climate, wave profile, thermal blend, 3/8 in width, 17 ft length, 3/8 in thickness, silicone/epdm, White, for sealing air and moisture leaks around doors and windows.. From the Manufacturer High performance Silicone/EPDM rubber blend provides a superior seal to block out drafts and dust around doors and windows. Stays durable and flexible in extremely cold and hot temperatures, down to -40F and up to 140F. Saves energy and money and year-round. Guaranteed flexible for the life of your home. Features Seals out drafts and dust around doors and windows Silicone EPDM blend outperforms typical foam tapes Unique "wave" profile expands and contracts to seal gaps up to 3/8'' Country of Origin: CHINA USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.