DuraVent FasNSeal Double Wall Adapter: changes single wall vent pipe to double wall
The DuraVent FasNSeal Double Wall Adapter is the connector that joins single wall FasNSeal pipe to FasNSeal W2, the double wall version. It makes that change in one direction, from single wall to W2, not back again. 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 your vent needs on this page, from 3 to 16 inch.
The vent needs FasNSeal parts all the way from the appliance’s exhaust outlet to the outdoors. DuraVent prohibits mixing another vent maker’s pipe, fittings, or joining methods because the connections seal differently. The pipe also needs support rather than carrying its own weight. Horizontal runs need hangers every 6 feet. Wall brackets go after a turn upward into a vertical run of 10 feet or more, every 12 feet vertically, and after any offset. Each floor or ceiling crossing needs a firestop, a protective part around the pipe. Changing from W2 back to single wall? See the DuraVent FasNSeal Single Wall Adapter. The DuraVent FasNSeal Double Wall Adapter 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:








































