Home Chimney Pipe Type B Vent Pipe
Metal-Fab 4 Inch to 6 Inch Type B Round Chimney Pipe Increaser

Metal-Fab 4 Inch to 6 Inch Type B Round Chimney Pipe Increaser

Write a Review
$42.07 $49.99 16% Off
In Stock
Usually ships same business day.
Qty: 1

Frequently Purchased Together

Have questions?

Our NFI-certified experts are here to help!
Call us at 800-203-1642 Call us at 800-203-1642

Product Details

Manufacturer: Metal-Fab
Metal-Fab Part Numbers: 4MIX6
Item Number: MFB-4MIX6
UPC: 622417101028


  • Allows connection of 4" and 6" pipe
  • .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
  • Small End: 4" Dia.
  • Large End: 6" Dia.
  • Height: 6.5"
  • 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 4 Inch to 6 Inch Type B Chimney Pipe Increaser is exactly what you need if you want to increase your round vent diameter from four to six inches.

Customers Also Viewed

Customer Q&A with Product Specialists

Ask a Question

Customer Reviews

Write a Review