DuraVent Type B Gas Vent Steep Roof Flashing - For Vent Pipes with a 4" Diameter - 4GVFSR: This unit necessitates a venting pipe with a 4" inner diameter. If your vent system goes through the roof of your home, it is necessary to use a flashing product that helps protect your vents from moisture or leaking from adverse weather conditions. This galvalume construction is durable, and it comes with a 25-year warranty in case of defective parts. This flashing helps finish your vent termination and create a weather resistant finish that keeps water from damaging the interior of your chimney and ventilation system.

Weather-proofs vent terminations on steep roofs For use with 4" Dura-Vent Type B Gas Vent pipes Suitable for roofs with pitches of 7/12 to 12/12 Durable galvalume construction 25-year warranty *Separately purchased Storm Collar required Dimensions: 17" L x 20" W