The KC600 Foam-Tite Weatherstrip is ideal for: warped, inconsistent new or old residential and commercial doors, covers gaps up to 3/4". Preferred by professionals in utility sponsored energy efficiency programs because of its superior installation inspection pass rate, that eliminates inspection failures and costly service calls. Seven year limited warranty. Individually packaged, each set comes complete with one 36” top header, two factory notched 80”, 84” or 96" side stops, screws, slotted screw holes for easy adjustment and installation instructions. Now available in gray, white and brown. Seals drafts better and lasts longer than other door weatherstripping. The KC600 Foam-Tite Weatherstrip's USA made weather sealing gasket is produced using a patented process that combines Santoprene™ Thermoplastic Rubber with closed cell polypropylene. This unbeatable combination of material and technology results in superior weatherstrip that has excellent compression set resistance and ultra violet resistance characteristics. Resistance to compression set -the ability of a seal to spring back into shape after being compressed over and over again is the single most important factor in distinguishing weather sealing performance. AM Conservation Group, Inc. specializes in weatherstripping products, weatherization products, water and energy efficiency for the professional and consumer alike.