The M-D Premium Thermoplastic Rubber Window Seal for Medium Gaps is designed to protect against drafts, moisture, dust and insects. Save on energy by sealing windows keeping the heat or air conditioning from escaping. Made of durable Thermoplastic Rubber, this seal exhibits the highest sealing properties for a window. The seal provides maximum resistance to wear and tear, the highest resistance to wind and water, and exceptional material memory for long-term durability. The self-adhesive design is easy to install by simply pressing on to a clean and dry surface. No hardware required. Before installation, cut to desired length using scissors.. Made of highly durable premium rubber. Seals gaps at the bottom of your window to protect against drafts, moisture, dust and insects. 5/16 in. W x 1/4 in. H x 17 ft. L. Brown color. Maximum resistance to wear & tear. Remains flexible from -40° F to 140° F. Increased seal performance with water contact. Self-adhesive. Also seals doors. Cut with scissors to desired length. Apply to clean dry surface above 40°F. Lifetime Guarantee. Fits gaps up to 1/8" - 1/4". Unspooled Length (ft.): 17. Interior/Exterior: Interior/Exterior. Material: Plastic