DuraVent FasNSeal Variable Pitch Roof Jack: a heat shield that keeps the roof opening clear
The DuraVent FasNSeal Variable Pitch Roof Jack is an 18 inch heat shield for a single wall vent passing through a roof. It sits inside the variable pitch roof flashing, the fitting around the vent at the roof opening. The jack holds the vent in the center of the opening and keeps a gap between it and the roof framing. DuraVent requires a roof jack inside the flashing for a single wall vent. FasNSeal is DuraVent’s stainless steel vent for high efficiency gas boilers, furnaces, and water heaters, built to carry pressurized exhaust and its acidic condensate outside.
Choose the size for your vent on this page, from 3 to 16 inch. FasNSeal vent pipe has welded seams in its stainless steel walls. An experienced professional should handle the installation, and DuraVent calls for a qualified inspector to check the whole vent each year. Need the roof fitting this shield sits in? See the DuraVent FasNSeal Variable Pitch Roof Flashing. The DuraVent FasNSeal Variable Pitch Roof Jack ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.








Commercial projects may require custom parts and unique system designs. Duravent offers complete project assistance:








































