The
3" Galvanized Steel 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.Used to increase diameter of flue pipe perimeter when making connections Larger end is crimped for easy connection with same-diameter pipe or fitting opening For all heating, air conditioning and venting where rigid pipe is required 24-gauge cold-rolled steel construction for durability and lasting performance