Product Description
The Metal-Fab 3MIN4 is a gas vent increaser designed for Type B vent pipe. This product features a 3-inch diameter at one end and a 4-inch diameter at the other. The increaser has a double wall construction, ensuring safety and efficiency during operation.
- Made from aluminum alloy for the inner wall
- Galvanized steel casing for durability
- UL Listed for safety standards
Product Highlights
This increaser is used in various gas appliances including boilers and furnaces. It allows for a seamless transition between different pipe sizes, enhancing the overall efficiency of gas venting systems.
Product Information
Standard Information
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Brand: Metal-Fab
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MPN: 3MIN4
Technical Specifications
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Larger End Size: 4 inch diameter
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Smaller End Size: 3 inch diameter
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Length: 2.68 inches
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Material Thickness: 0.012 inches (inner wall), 0.018 inches (outer wall)
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Material: Aluminum alloy (flue), G90 galvanized steel (casing)
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Applicable Standard: UL 441, NFPA 54/211
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Application: Gas boiler, fireplace, furnace, unit heater, radiant tube heater
