2-1/2 ROOF FLASHING - NEOPRENE ROOF FLASHING - NEOPRENE 9" X 11-1/2" ONE PIECE BASE AND COLLAR PIPE SIZE = 2-1/2" - BASE AND COLLAR IN A ONE-PIECE CONSTRUCTION OF ELASTOMER MATERIAL FLASHING FITS FLAT TO 45 DEGREES FOR COPPER, PLASTIC, CAST IRON, OR GALVANIZED PIPE