Standard plumbing vent pipes are 2", 3", 4", 5" or 6" inside diameter.
Measure the inside diameter of the plumbing vent pipe.
For non - standard plumbing vent pipes please contact us.

Measure The Pitch
Or Slope Of The Roof

To order the correct plumbing vent flange first determine the pitch of your roof. Our flanges are adjustable and made to fit all roof pitches from flat to steep 15/12, the roof angle of an A frame.

Click on image for how to measure

Our replacement flanges do not require removing the old flanges or the tearing off of any shingles to install. Follow these simple steps for installation, together with your own common sense about working up on a roof.