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Metal-Fab 3M4 3" Style "M" B- Vent 4' Length

SKU: 204265
Save 53% · Retail: $32.34

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About the Metal-Fab 3M4

The Metal-Fab 3M4 is an aluminum B-vent flue with a galvanized steel casing. This tool is lightweight, durable and ideal for construction and commercial applications. It can withstand rigorous use and has a sleek design that is portable and easy to apply. This flue is 3” in diameter and 4’ long. Its casing is hemmed with a positive twist lock connection and the Surelock tab standard on 3”-6”. The Metal-Fab 3M4 M-style B-Vent is listed and tested to UL 441.

Product Details

Length: 4
Manufacturer: Metal-Fab
Material: Aluminum
Product: Vents and Terminations
Use: Commercial & Industrial
Mpn # 3M4
Weight 3.70 lbs.

Product Features

  • Class B Gas vent pipe for furnaces; unit, wall and water heaters.
  • Elimination of sharp edges by hemming the flue and casing.
  • Incorporates features that make installation quick, easy, and safe.
  • Easy assembly and disassembly, without tools, using positive twist lock.
  • 360 degree rotation of small diameter fittings using swivel tees, wyes, and elbows.
  • Saves space inside standard stud walls using oval pipe.
  • Operates with a non-positive vent static pressure.
  • Enables the product to be used in homes and commercial buildings at close clearance to combustible.
  • Listed by Underwriters Laboratories for use with approved category 1 gas furnaces, heaters, and boilers.


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