Metal-Fab - Metal-Fab's round and oval Type-B vent is UL listed 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 & disassembly, without tools, using positive twist lock
360° rotation of small diameter fittings using swivel tees, wyes, and elbows
Space savings inside standard stud walls using oval pipe
Metal-Fab 3"- 6" diameter B-vent pipe is now standard with our new Surelock® B-Vent Locking System . The patented locking system provides a secure lock with just the push of a tab, and can be easily disassembled by pulling the tab back out. 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.
Warning: this product contains a chemical known to the State of California to cause cancer. P65Warnings.ca.gov
3.3 Pounds (lbs)
10 Inches (In)
37 Inches (In)
Country of Origin
14.3 Inches (In)
Outer wall is constructed of galvanized steel .018" thinck G90 Steel for sizes 3" to 14" diameter and .024" think G90 for sizes 16" to 30" diameter. The inner wall is constructed of aluminum alloy .012" think for sizes 3" to 8" diameter and .018" thick f
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