DuraVent FasNSeal Storm Collar for W2: a roof rain barrier sized for the wider pipe
The DuraVent FasNSeal Storm Collar for W2 is a collar that keeps rain out of the gap where a vent passes through the roof flashing, the cover around the roof opening. It sits on the flashing and directs water away from that gap. This is the single wall storm collar listed again for use with a W2 run. Order it 1 inch larger than your W2 vent size to fit the wider outside wall. A 10 inch W2 vent takes an 11 inch collar. Choose from 4 to 10 inch sizes, plus 11, 13, and 15 inch.
FasNSeal W2 is DuraVent’s double wall stainless steel vent for high efficiency gas boilers, furnaces, and water heaters, with an air space between its two walls. W2 can need as little as 1 inch of space from materials that can burn, depending on the appliance’s exhaust temperature and whether the pipe is exposed or enclosed. Single wall needs more room. W2 also allows an outdoor run below the roof line without the enclosure otherwise needed. Have a single wall vent? See the DuraVent FasNSeal Storm Collar for single wall vents. The DuraVent FasNSeal Storm Collar for W2 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:








































