Metal-Fab 3" Premium Biomass 12" Straight Pipe - 3B12

Metal-Fab 3" Premium Biomass 12" Straight Pipe - 3B12

444 stainless steel liner. Galvanized casing. 1" clearance to combustibles.
Note: Pipe overlaps 1 1/2" when joined together. Assembled length is 1 1/2" less than listed length.

Type L Biomass Chimney
For use with biomass fuels such as pellet, corn, wheat or other grassy and woody plants as specifiedby appliance manufacturers.
  • Tested and Listed to UL641
  • Factory-built double wall construction, using 444 stainless steel flue and galvanized steel outer casing.
  • Continuous laser-welded inner flue and casing.
  • 1" clearance to combustibles vent system, rated for continuous use of flue temperatures up to 570 degrees F.
  • Silicone gaskets provide airtight seal eliminating fly ash leakage.
  • Innovative twist-locking connections rotate 130 degrees allowing seam alignment for an aesthetically pleasing installation.
  • Limited Lifetime Warranty
We strive to ship within 5-7 business days, but in-season delivery can take up to 2 weeks or more. If you have any questions or concerns about delivery, please e-mail us at:

PDF Click to see the Metal-Fab Premium Biomass Brochure

California residents please click on the link for information on Proposition 65 BEFORE purchasing.

Supply chain disruptions have greatly impacted inventory levels in our industry, as well as in many other organizations across the globe. We want to personally acknowledge these shifts in supply levels have affected our ability to surpass your expectations in many situations for prompt delivery of your order. Should you not be able to wait for supply delays, please contact us about stock levels before ordering. As always, we thank you for your business!