Noble Clamping Ring PVC Shower Drains Shower drains for watertight installations. Features Use with Noble sheet membrane in wet areas Meets plumbing code requirements The drain has a beveled flashing body/adapter for sub floor installation Strainer fastens to drain body with four stainless steel machine screws that thread into brass inserts The drain body has a membrane flange and a 2" Schedule 40 hub connection, which conforms to ASTM D2665 Connection to the DWV system shall be made with a solvent wet joint to PVC pipe Brass inserts in the collar and tailpiece prevent damage from tightening Weep slots and holes on both sides of the collar maximize drainage Materials Strainer styles include 18 gauge stainless steel chrome plated, 3/16" cast nickel/brass Top housing: PVC Flashing collar: PVC Drain Body: PVC