B Vent Double Wall Flue Pipe Increaser 12" to 20" 12MIX20
Note: Vent overlaps 1.5" when joined together. Therefore, assembled length is 1.5" less than listed length.
With quick connect lock using sheet metal screws.
Allow 2-4 Weeks for Delivery
Metal Fab will not ship direct. We will have to bring your oder in with a stocking order and then ship it. There will be an extra shipping charge on orders needed sooner.