This black sewer vent pipe adapter uses a two-piece design to fit 1-1/2 inch drain lines on most RVs. Polyethylene construction handles UV and temperature swings without becoming brittle. A removable cap snaps over the flange to keep debris and pests out when the vent is not in use, while the flange’s mounting holes secure it firmly to your roof.

• Fits 1-1/2 inch vent pipes
• Black polyethylene resists UV degradation
• Two-piece assembly
• Removable cap included
• Flange with mounting holes