DuraVent FasNSeal Rain Cap: keeps rain out of a vent above the roof
The DuraVent FasNSeal Rain Cap is the cap at the top of a vent that ends above the roof. It keeps rain out while letting exhaust escape. 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 a size from 3 to 16 inch on this page to match your vent. The cap locks onto the vent with its band. For inspection, a professional can loosen that band and lift the cap off. The flashing that covers the roof opening and the storm collar that seals around the pipe are separate parts.
The vent must reach at least 2 feet above the roof and higher than any wall less than 8 feet away. A vent standing more than 6 feet above the roof needs extra support. An experienced professional should handle the work, and DuraVent calls for a qualified inspector to check the entire vent annually. Need the double wall version? See the DuraVent FasNSeal W2 Rain Cap. The DuraVent FasNSeal Rain Cap 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:








































