Metal-Fab 3MIN4 3 x 4, 0.012 Aluminum Alloy Flue, 0.018 G90 Galvanized Steel Casing, Double Wall, Round, No-Height, Type B Gas Vent Increaser

Product Description

The Metal-Fab 3MIN4 is a type B gas vent increaser. Its design features a double wall, round structure with no height. The larger end has a diameter of four inches, while the smaller end has a diameter of three inches. The length of the increaser is two point six eight inches. The inner wall is made of aluminum alloy with a thickness of zero point zero twelve inches and the outer wall is constructed from G90 galvanized steel, with a thickness of zero point zero eighteen inches. This product adheres to standards set by UL 441 and NFPA 54 and 211. It is suitable for use with gas boilers, fireplaces, furnaces, unit heaters, and radiant tube heaters.

• Double wall construction for durability
• Suitable for various gas vent applications
• Meets UL and NFPA standards

Product Highlights

The Metal-Fab 3MIN4 increaser is designed for reliable performance in residential and commercial settings. Its easy installation process and sturdy build make it a popular choice for HVAC professionals.

Product Information

Standard Information

• Manufacturer: Metal-Fab
• UPC: 622417424981

Technical Specifications

• Larger End Size: 4 inch diameter
• Smaller End Size: 3 inch diameter
• Length: 2.68 inches
• Material: Aluminum alloy (flue), G90 galvanized steel (casing)
• Material Thickness: 0.012 inch (inner wall), 0.018 inch (outer wall)
• Applicable Standards: UL 441, NFPA 54/211
• Used On: Type B gas vent
• Application: Gas boiler, fireplace, furnace, unit heater, radiant tube heater