PROFLO PROFLO 2" x 3" PVC Sch 40 Adapter Air Admittance Valve (Sold in quantities of 6) For Venting 4" DWV and Smaller

Product Features: 160 DFU 2" x 3" Sch 40 adapter For venting 4" DWV and smaller Includes screening on air inlets to protect the seal Made in USA ASTM Specifications : ASTM D-2665|ASTM D-2661 Constructed of ABS - a polypropylene blend NSF Certified NSF Specifications : NSF 14 Quantity: 6