DuraVent FasNSeal Support Clamp: holds vent runs away from a wall
The DuraVent FasNSeal Support Clamp is a two piece clamp that supports a vertical or horizontal vent away from a wall. It hangs from threaded rod, a metal rod with screw threads, which is sold separately. DuraVent recommends a clamp every 10 feet on vertical runs and every 6 feet on horizontal runs, with more wherever needed. Choose a 3 to 16 inch size to match your vent. 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.
It serves natural gas or propane appliances that call for a special gas vent. Condensate is the acidic liquid that drips from the exhaust. Unless the appliance has its own drain, a FasNSeal drain belongs close to it. Drains also go at each vertical stack’s base and every 30 feet along horizontal runs, never outdoors in cold climates. Horizontal venting rises at least 1/4 inch per foot away from the appliance so liquid flows back to the drain. Supporting a double wall vent? See the DuraVent FasNSeal Support Clamp for W2. The DuraVent FasNSeal Support Clamp 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:








































