DuraVent FasNSeal Flex 3" x 170' Stainless Steel Custom Flex Length btu850000 THOM-NG-KIT Natural gas conversion kit

THOM-NG-KIT Natural gas conversion kit for THOMPSON

Model 451313 Flue Size 13" x 13" Size Width:  11" - 13

High-density steels make the heater excellent in heating conductivity and hard to get deformed

so it delivers the optimum amount of heat

Only use the flame without heat for year-round home decoration

DuraVent FasNSeal Flex 3" x 170' Stainless Steel Custom Flex Length btu850000 THOM-NG-KIT Natural gas conversion kitMade from super ferritic stainless steel. Corrosion resistant. Manufactured with a sure seal locking seam for superior strength and flexibility. The smooth inner wall provides for no output reduction, allowing for full appliance efficiency, ease of cleaning and regular maintenance. The smooth inner wall optimizes gas flow, minimizes back pressure, and facilitates condensate management. Only flexible chimney liner listed to UL 1738 standard. What's