This Ventline Sewer Vent is compatible with 1-1/2" pipes. Specifications•Compatibility: 1-1/2 Inch Pipe•Color: White•Material: Polyethylene•Includes Cap: Yes•Includes Putty Tape: No•Includes Mounting Hardware: No Accommodates Maximum 6/12 Pitch Roofs Flange Has Mounting Holes & A Wipe Seal Feature Removable Cap Snaps On & Securely Fastens To Flange | Ventline Sewer Vent, White