4" DWV PVC Fitting Cleanout Adapter and Plug D112-040
Jones Stephens - Drain, Waste & Vent Cleanout Test Tee with Cleanout Plug: 4″ Fitting, Hub x Hub x FIPT, Polyvinylchloride - 96872197 - MSC Industrial Supply
Charlotte Pipe (PVC 00444X 1650) 8" X 8" X 4" Cleanout Tee with Cleanout Plug (Hub x Hub x FPT) - 24hr Supply