The model T52 Dual inlet dishwasher air gap is designed for use in drain line applications with two dishwashers or a Fisher & Paykel Dishwasher. Also KitchenAid and Kenmore offer dual dish-drawer dishwashers.Eliminates need for a Drain Line Adapter ($6-10 Savings)Includes chrome plated plastic coverAll Amerigap units are listed by NSF and UPCAmerigap T52 twin inlet ports accept dishwasher inlet hose (5/8" I.D.). Outlet port accepts standard 7/8" I.D. garbage disposal hose