Imperial 3 in. D X 4 in. D Galvanized Steel Furnace Pipe Increaser

The 3 inch galvanized increaser is used for connecting single wall stove pipe to chimneys and vent stacks. Allows for 3 inch diameter round pipe to connect to 4 inch diameter round pipe. Sturdy, 24 gauge construction designed for optimal heat efficiency and long-term use. Crimped on one end to easily fit into pipe or fitting of the same diameter.