Air Admittance Valve; Applicable Standard ASSE 1050/1051, ASTM D2665/D-2661, NSF (Canada and US), ISO 9001, ICC ESR 1664, IAPMO, IPC, IRC; Inlet Size 2"; Inlet Connection Threaded; Body Material PVC; Media Handled Air; Inclusions/Features Schedule 40 Adapter; Application Plumbing Drainage System; Capacity 20 DFU; Overall Height 4.53"; Packaging Quantity 50 per Carton; Weight 1 Lb; Warranty Limited Lifetime