Description

Intertherm’s Flue Extensions aid in extending the roof jack connection to the furnace. Flue Extension 901935 features an inside diameter of 5″, an outside diameter of 8.25″ and a length of 18″. Extension lengthens the roof jack connection an additional 18″. Make sure the interior extension is below the ceiling, connections cannot be installed inside of attics.
Interior use only
Install below the ceiling, connections cannot be installed inside of attics
Inside Diameter: 5″
Outside Diameter: 8.25″
Extension Length: 18″