Pop up Drainage Emitter, Fits 3-Inch and 4-Inch Sewer and Drain Fittings, Dual-R
【3″ & 4″ Fit Guide】Fits 4″ S&D/SDR-35 hub-style drain fittings and matching 4″ elbows. The 3″ side fits over standard 3″ DWV pipe and matching 3″ elbows. Not a direct fit for 4″ Schedule 40, thick-wall, corrugated pipe, or 3″ S&D/SDR-35/corrugated pipe unless the proper adapter is used.