Elevate UltraPly TPO 18" (457.2 mm) Curb Flashing is designed for the flashing of curbs and parapet walls, eliminating the need for time-consuming field cutting of membrane. A labor-saving feature of the TPO 18" (457.2 mm) Curb Flashing is that the reinforced membrane has an encapsulated edge which eliminates the need for applying Elevate UltraPly Cut Edge Sealant after the flashing-to-roof splice is completed. UltraPly TPO 18" (457.2 mm) Curb Flashing is sold in 50' (15.2 m) rolls, making it easy to handle. Each 50' (15.2 m) roll will flash three 4' x 4' (1.2 m x 1.2 m) curbs, with virtually no waste.