DuraVent FasNSeal Tall Cone Roof Jack: a heat shield inside a flat roof flashing
The DuraVent FasNSeal Tall Cone Roof Jack is an 18 inch heat shield for a vent passing through a flat roof. It sits inside a tall cone flashing, the piece that covers the roof around the vent opening. The jack keeps the single wall vent centered and holds the gap around it open. It fits tall cone flashings only. 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 to match your vent, from 3 to 16 inch. FasNSeal is for natural gas or propane appliances that call for a special gas vent. The appliance maker decides whether the vent can exit through the roof. FasNSeal parts have a gasket and a locking band built into the wider end to seal and secure each connection. Need the flat roof flashing this shield fits inside? See the DuraVent FasNSeal Tall Cone Flashing for flat roofs. The DuraVent FasNSeal Tall Cone 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:








































