.EZ-PV3-R6 - EZ PVC Slab on Grade Drain with 6" Nickel Bronze Strainer and 3" x 4" Outlet Innovative EZ1™ technology simplifies product installation, including concrete shield for 1-1/4" of available vertical post-pour adjustment, prepackaged shims for tilt correction, integrally protected light-duty strainer, and rough-in cover for protection during the concrete pour.