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
Small End: 3" Dia.
Large End: 6" Dia.
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
Part of Metal-Fab's versatile Type B line, this Metal-Fab 3 Inch to 6 Inch Type B Chimney Pipe Increaser is exactly what you need if you want to increase your round vent diameter from three to six inches.