Selkirk 3M24 Type B Double Wall Round Gas Vent Pipe

Product Description

The SELKIRK 3M24 is a Type B double-wall round gas vent pipe section designed for venting gas-fired appliances in residential, commercial, and industrial settings. Measuring 3 inches in diameter and 24 inches in length, it features an inner wall of aluminum alloy at 0.012 inches thick and an outer wall of G90 galvanized steel at 0.018 inches thick. The double-wall construction maintains proper flue gas temperatures and reduces heat transfer to combustibles. It ships with a lock tab non-positional lock system that simplifies field assembly and keeps sections securely joined without requiring precise rotational alignment.

This vent pipe section is suited for venting natural gas and propane appliances including furnaces, water heaters, and stoves. It is appropriate for residential, commercial, and industrial installations wherever Type B gas vent systems are specified. The non-positional lock tab design is especially practical in tight mechanical rooms or attic runs where rotating pipe sections into alignment is difficult. The 24-inch length works for both straight runs and spacing between fittings in larger vent assemblies.

Key Features

• Type B double-wall construction with aluminum alloy inner wall and G90 galvanized steel outer wall
• Inner wall thickness of 0.012 inches and outer wall thickness of 0.018 inches for code-compliant durability
• Lock tab non-positional lock system allows connection at any rotational angle
• 3 inches diameter by 24 inches length suits common residential and light commercial vent runs
• Listed to UL 441, ULC S605, and NFPA 54/211 for verified compliance
• Compatible with fired appliances including furnaces, water heaters, and stoves

Compatibility

Designed for use with Type B gas vent pipe systems serving residential, commercial, and industrial fired appliances including water heaters, furnaces, and stoves. Part of the SELKIRK RV series.

Installation Notes

Type B gas vent pipe is installed by licensed HVAC technicians or plumbers in accordance with NFPA 54, NFPA 211, and local mechanical codes. Shut off gas supply and allow appliances to cool fully before working on any vent section. Maintain required clearances to combustibles as specified on the product listing and in applicable codes. Do not use Type B vent pipe for products or fuel types outside its listed application.