OATEY 72173 3" or 4" PVC Adj. Commercial Drain w/ 6" NI Grate & Square Ring

Both. The Oatey 72173 commercial floor drain is built to take either 3 inch or 4 inch PVC DWV pipe, so one part covers the two common riser sizes on a commercial slab. The drain body itself is PVC, so it solvent welds directly to PVC DWV pipe with standard primer and cement.

No. The 72173 body is PVC and is made to solvent weld to 3 inch or 4 inch PVC. For cast iron you would need a no-hub or compression adapter at the riser; for ABS, use an ABS-bodied drain or a listed transition coupling, since PVC cement does not make a reliable joint to ABS.

The strainer grate measures 6 inches and is nickel finish, paired with a square ring. That is the visible face at the finished floor, so plan your tile or topping cut around a 6 inch round grate set inside the square ring.

Adjustable means the strainer assembly threads up and down relative to the drain body, so the grate can be brought flush with the finished floor after the pipe is set. That matters when the slab pour, membrane, or tile thickness is not final when the rough-in goes in, which is the usual case on commercial work.

The nickel grate on the 72173 gives a bright metal face at the floor rather than plastic, which holds up better to mop traffic and foot traffic in restrooms, janitor areas, and back-of-house spaces, and it matches other chrome or nickel trim in the room. The body under it is PVC, so the corrosion resistance of the pipe connection is not a concern.