DuraVent FasNSeal Flex 7" x 190' Stainless Steel Custom Flex Length Copper Schwank Two Stage Control Switch

Schwank Two Stage Control Switch for dual element ElectricSchwank heaters

or chalking

The Flex 104PN

What do you need – cast iron or steel bar grates

DuraVent FasNSeal Flex 7" x 190' Stainless Steel Custom Flex Length Copper Schwank Two Stage Control SwitchMade 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