Imperial 4 in. D X 5 in. D Galvanized Steel Stove Pipe Increaser

Allows for 4 inch diameter round pipe to connect to 5 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.
Used to increase diameter of galvanized round perimeter pipe
For all heating, air conditioning and venting where rigid pipe is required Easy to use