K -profile for small gaps. 100% EPDM cellular rubber seals out drafts, dust, and moisture around doors and windows. Remains flexible from -40 deg. F. to 140 deg. F. Easy self-adhesive application, seals 1 door or 2 average size windows. Guaranteed flexible for 10 years. Saves energy and money year-round. 1/8" T. x 3/8" W. x 17' L. White.