Access the drain pipe system to clear out clogs with the National Diversified Sales 4P11 4" White Hub x FPT PVC S&D Female Cleanout Adapter. Hub connects to 4 in. Sewer and Drain (S&D) pipe; 4 in. Female Pipe Thread (FPT) connection fits 4 in. Male Pipe Thread (MPT) Cleanout Plug (41P8), sold separately. The Cleanout Adapter is made of polyvinyl chloride (PVC) and makes a Hub X FPT connection. Meets applicable ASTM standards. For use in non-pressurized underground sewer and drainage applications; maximum working pressure of 5 psi. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.