Plumbing Z-FLEX Venting | 3″ Z-Vent Adjustable Wall Thimbles (8″ X 8″) (Adjust From 4″ To 7″)

Z-Vent Is A Factory Built, Engineered Al29-4C Special Gas Vent Pipe, Suitable For Positive Or Negative Pressure. Z-Vent Is Ul Tested And Listed To Ul1738/S636. Cat Ii, Iii, Iv Venting Approved.
Flashing For Use In Flat Roof Or Chimney Application.