Product Description
The Metal-Fab 4MPT is a 4 inch partition thimble designed for B-vent round HVAC ducts. This unit features a double wall construction with a 0.012 inch aluminum alloy inner wall and a 0.018 inch G90 galvanized steel outer wall. It serves applications in gas boilers, fireplaces, furnaces, unit heaters, and radiant tube heaters. This thimble is compliant with UL 441 and NFPA 54/211 standards.
- Size: 4 inches
- Double wall for enhanced insulation
- Adjustable dimension from four to six and a half inches
Product Highlights
This product is suitable for use in both commercial and residential settings, ensuring safety and efficiency in gas venting systems.
Product Information
Standard Information
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Brand: Metal-Fab
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MPN: 4MPT
Technical Specifications
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Diameter: 4 inches
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Material: Aluminum Alloy (Flue), G90 Galvanized Steel (Casing)
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Material Thickness: 0.012 inch (Inner Wall), 0.018 inch (Outer Wall)
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Applicable Standards: UL 441, NFPA 54/211
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Type: Double Wall, Round
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Dimensions: 6.6875 inch A, 9 inch B
