A clean, code-ready toilet connection. This 4″×3″ ABS closet flange secures the bowl to the floor while solvent-welding to your ABS DWV system via a hub socket—simple, rigid, and built for non-pressurized sanitary service. ABS DWV closet flanges are manufactured to ASTM D2661 / CSA B181.1 and carry a cUPC marking for inspection.