1 5/8" Air Gap for Kitchen Sink - Stainless Steel Sink Ventilation Device, Prevents Backflow & Contamination - Perfect for Dishwashers, Garbage Disposals & Plumbing Systems

This air gap prevents drain water from the sink from backing up into the dishwasher. Air gap features a 1-7/8" diameter x 2-1/8" long brass cap with a polyethylene body. Designed to fit a 5/8" dishwasher inlet and 7/8" outlet.