The original flexible pipe flashing system with a 20 year warranty. Designed for ?? to 18? diameter pipes. One piece construction is easy to install. Pleated cone adjusts to any roof pitch and allows for complete flexibility. Made of long life, flexible, weatherproof gray EPDM rubber or red silicone. Flexible, corrosion resistant aluminum base conforms to any panel configuration. EPDM and silicone will not crack or break.