Product Description
The Metal-Fab 4M3 is a double wall gas vent pipe designed for use with category I appliances. This venting solution meets NFPA standards and is ideal for installations involving gas boilers, fireplaces, and furnaces. Constructed with an aluminum alloy flue and a galvanized steel casing, it ensures durability and safety in operation.
- Size: Four inches in diameter and three feet in length
- Type: Double wall, round, Type B gas vent pipe
- End type: Twist-lock for secure fitting
Product Highlights
The Metal-Fab 4M3 gas vent pipe provides reliable performance for various heating applications, meeting industry standards.
Product Information
Standard Information
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Material: Aluminum alloy (Inner wall), G90 galvanized steel (Outer wall)
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Temperature Rating: Up to 530 degrees Fahrenheit
Technical Specifications
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Diameter: Four inches
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Length: Three feet
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Material Thickness: 0.012 inches (inner), 0.018 inches (outer)
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Applicable Standards: UL 441, NFPA 54/211
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Clearance: One inch
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Applications: Gas boiler, fireplace, furnace, unit heater, radiant tube heater
