Metal-Fab 3" to 7" Type B Round Chimney Pipe Increaser - 3MIX7

Connecting pipeline of differing diameters is made easy with this chimney pipe increaser from Metal-Fab. The pipe is 8.5 inches long with a 3-inch diameter on one end and a 7-inch diameter on the other. This chimney pipe has a galvanized steel outer wall for protection from corrosion and an aluminum alloy inner wall for safety. The double wall design also allows for a minimum of 1 inch of clearance to combustibles. Installation is simple with the secure locking system; no tools are necessary. Hemmed flue and casting make installation safer by creating smooth edges. The 3-inch end conveniently connects to a variety of other brands of UL listed round gas vent pipe. Simplify your chimney pipe installation with this chimney pipe increaser.

• Allows connection of 3" and 7" pipe
• .018" galvanized steel outer wall and aluminum alloy inner wall
• Double-wall design allows a 1" clearance to combustibles
• For use with Metal-Fab Type B Round Chimney Pipe
• Secure locking system requires no tools
• Hemmed flue and casing eliminate sharp edges
• 3" end is compatible with other brands of UL Listed round gas vent pipe (see list below)
• Listed to UL 441
• Limited one-year warranty
• Specifications:
• Small End: 3" Dia.
• Large End: 7" Dia.
• Height: 8.5"

3" to 6" pipe sizes are compatible with the following brands of Type B gas vent pipe:

• General Products Co. - Airjet
• American Metal Products Co. - Amerivent
• Hart & Cooley - Metlvent
• Household Manufacturing Inc. - Metalbestos and Airmate
• Mitchell Metal Products Inc. - Mitchvent
• Selkirk Metalbestos - Metalbestos
• Simpson Dura-Vent Inc. - DuraVent
• ECCO Heating Products - ECCO Manufacturing