Metal-Fab, Inc.
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Metal-FabDouble Wall Biomass Chimney

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Tested and listed to UL 641, Biomass Chimney features a corrosion resistant 430 stainless flue and galvanized steel casing designed to operate in highly corrosive biofuel applications.  Our cutting-edge positive twist-lock design, locking tabs and rope gasket at each joint, prevents fly ash leakage and reduces installation time.

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  • Application : For use with wood pellets, oil, wheat, cherry pits, corn, switchgrass, etc.
  • Listings/Standards : NFPA 211, UL 641
  • Construction
    • Flue Material Specifications:3" - 6"/.012, 430 stainless steel
    • Casing Material Specifications:3" - 6"/.018, galvanized steel
  • Diameters : 3" - 6"
  • Clearances : Minimum 3" clearance to combustibles