Metal-Fab 3 Inch to 4 Inch No-Height Type B Round Chimney Pipe Increaser

Features

• Allows connection of 3" and 4" pipe without adding undesirable height
• .018" galvanized steel outer wall and .012" aluminum alloy inner wall
• Double-wall design allows a 1" clearance to combustibles
• 1/4" insulating air space
• For use with Metal-Fab Type B Round Chimney Pipe
• SureLock locking system creates secure connections without tools
• Hemmed flue and casing eliminate sharp edges
• Compatible with other brands of UL Listed round gas vent pipe (see list below)
• Listed to UL 441
• Limited one-year warranty
• Specifications:
• Large End: 4" Dia.
• Small End: 3" Dia.
• Height: 2.688"

• 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