Imperial 4 In. x 5 In. 24ga Large End Crimp Black Stove Pipe Flue Increaser

Use the Imperial 4-in x 5-in Black Stove Pipe Increaser when connecting from a 4-in wall or chimney breach to an 5-in stove pipe. Its large end is crimped for easy assembly to round pipe or fittings of the same diameter. It is constructed with 24-gauge cold-rolled steel and finished with a black matt paint that resists chips and scratches for long-term performance and durability. The stove pipe increaser has a maximum temperature rating of 700F, with a short-term exposure rating up to 800F. Our single-wall black pipe system is an economical way to vent from a woodstove to the entrance of a chimney or where the system breaches a wall or ceiling.