Ayrlett 2 in. or 1-1/2 in. 20 DFU PVC Air Admittance Valve with Wall Box and Louvered Face Plate

The air admittance valve box from Ayrlett comes with a PVC 20 DFU air admittance valve mounted in a utility box ready to install. The box also comes standard with a 1-1/2 in. - 2 in. adapter, a protective plastic cover to prevent debris from entering the vent during installation and a sturdy louvered cover. Check local plumbing codes prior to installation.California residentssee Prop 65 WARNINGSRated 20 DFUFrame accommodates up to 1-1/2 in. drywall100% functionally testedLifetime warrantyInternational Plumbing Code (IPC) 2006International Residential Code (IRC) 2006Building Official Code Administration (BOCA) 1993Uniform Plumbing Code (UPC 2006) Section 301.22006 National Standards Plumbing Code (NSPC) Appendix E8National Plumbing Code of Canada 2005