The John L. Schultz "Aqua-Dynamic" heavy duty black neoprene roof flashing with a 2" opening features an extra thick EPDM construction, a full 20" x 20" apron and a double seal collar. The flashing is suited for copper, plastic or cast iron pipe and accommodates 2-12 through 6-12 pitch roofs, is CSA certified and is covered by a 1-Year limited warranty.