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Metal-Fab B-Vent Big Vent 18" Pipe Length - 22M18

Metal-Fab's round Type-B vent is listed by Underwriters Laboratories for use with approved category 1 gas furnaces, heaters, and boilers. A category 1 appliance operates with a non-positive vent static pressure. The double wall design of B-vent enables the product to be used in homes and commercial buildings at close clearance to combustible. Metal-Fab's B-vent design incorporates features that make installation quick, easy, and safe. Some of those features are:

* Elimination of sharp edges by hemming the flue and casing.
* Assembly and disassembly, without tools, using positive twist lock.
* 360 degree rotation of small diameter fittings using swivel tees, wyes, and elbows.
* Space savings inside standard stud walls using oval pipe.

Commercial Vent or "BIG Vent" is available in round sizes of 14" - 30". Big Vent sections (in 16" - 30" diameters) are joined together using Metal-Fab's quick connect locking system.

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: info@woodstovepro.com

Click to see the Metal-Fab B-Vent Big Vent Brochure

Click to see the Metal-Fab B-Vent Brochure

Click to see the Metal-Fab B-Vent Installation for 3-14 Diameter Products

Click to see the Metal-Fab B-Vent Installation for 16-30 Diameter Products

Click to see the Metal-Fab B-Vent Installation for Single Wall Flex Connector Products

Click to see the Metal-Fab B-Vent Installation for Double Wall Flex Connector Products

Click to see the Metal Fab B-Vent Sizing Tables

Click to see the Metal-Fab B-Vent Specifications

Click to see the Metal-Fab B-Vent UL Listed Connections

Click to see the Metal-Fab B-Flex Brochure

Manufacturer Warranty*
The Metal-Fab Type-B Gas Vent when installed according to manufacturers installation instructions, as prescribed by Underwriter Laboratories Standard 441 and 103, is warranted by Metal-Fab Inc. for one (1) year from the date of its original installation against defects in material or workmanship of the product for parts only.*
*For complete warranty details, please see the Metal-Fab Certificate of Warranty (PDF).

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