Model No. 20342;Air Admittance Valve;Applicable Standard ASSE 1051/1050, NSF 14, ICC-ES PMG-1025, C-IAPMO;Media Handled Water;Inclusions/Features Prevent the Loss of Water Seals in Traps, Exclusive Vermin Protection System;Application Residential/Commercial;Used for 4" Push-Fit Rubber Connector;Packaging Quantity 6 per Case;Weight 6 Lb per Case;Warranty Lifetime Limited