REDUCING TYPE; PVC MATERIAL; 8 INCH X 8 INCH X 4 INCH NOMINAL SIZE; SDR 35 SCHEDULE; NSF, UPC, CSA B182.2, IAPMO APPLICABLE STANDARD; NON-PRESSURE DRAINAGE, SEWER, SURFACE WATER APPLICATION; 0.24 TO 0.266 INCH THICKNESS; INJECTION MOLDED PROCESS