Metal-Fab 3MPT Aluminum Inner Wall and Galvanized Steel Outer Wall Round Wall Thimble 3 inch Weekend Sale

The Metal-Fab 3MPT is a round wall thimble designed for use in type B gas vent systems. This thimble features a 3 inch diameter and is constructed with an aluminum alloy inner wall and a galvanized steel outer wall.

• Outer wall: .018 thick G-90 galvanized steel for 3 to 14 inch diameters, .024 thick for 16 to 30 inch diameters
• Inner wall: .012 thick aluminum alloy for 3 to 8 inch diameters, .018 thick for 10 to 30 inch diameters
• Integral insulating air space: .25 inch for 3 to 6 inch diameters, .5 inch for 7 to 30 inch diameters

Product Highlights

The Metal-Fab 3MPT is ideal for ensuring safe and efficient operation of your gas vent systems, making it suitable for residential, commercial, and industrial applications.

Product Information

Standard Information

• Brand: Metal-Fab
• MPN: 3MPT

Technical Specifications

• Size: 3 inches
• Type: Type B Direct Vent
• Shape: Round
• Dimension A: 5.6250 inches
• Dimension B: 9 inches
• Material: Steel
• Inner Wall Material: Aluminum alloy
• Outer Wall Material: G90 Galvanized Steel
• Certifications: NFPA 54, NFPA 211, UL 441
• Application: Residential, Commercial, Industrial
• Product Type: Round Duct Fitting