DuraVent FasNSeal W2 Standard Tee: where a horizontal vent turns upward
The DuraVent FasNSeal W2 Standard Tee is a double wall vent fitting that connects a horizontal run to an upright section. Its lower opening takes a drain fitting or tee cap, both sold separately. It can also bring exhaust from two or more appliances into one vent, but only when the appliance maker approves that arrangement. A tee belongs in the run only when paired with a drain or used for approved shared venting. 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.
Choose a 3 to 16 inch size on this page to match the planned vent run. The tee’s inner walls are fully welded. A 1/2 inch air space separates the stainless steel exhaust passage from the outer stainless steel jacket, shielding heat and reducing the space needed from materials that can burn. DuraVent uses this design for runs inside house walls or between floor joists, as well as in commercial and multifamily buildings. Need single wall instead? See the DuraVent FasNSeal Standard Tee single wall fitting. The DuraVent FasNSeal W2 Standard Tee 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:








































