DuraVent FasNSeal Elbow Appliance Adapter: connects a vent to select HydroTherm and Smith boilers
The DuraVent FasNSeal Elbow Appliance Adapter is an elbow shaped part that connects a FasNSeal vent to a boiler’s flue outlet. DuraVent lists this adapter for HydroTherm Sabre FX Series and Smith Lexington GS110 Series boilers. It makes the connection where the appliance outlet is not built to accept FasNSeal directly. 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 3 inch or 4 inch size on this page. That measurement is the inside diameter of the FasNSeal vent and should match the boiler’s flue outlet. Have a different Smith boiler? See the DuraVent FasNSeal Smith GV-100 Appliance Adapter. The DuraVent FasNSeal Elbow Appliance Adapter ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.








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