Metal-fab MF-4D6 Direct Vent Straight Pipe 6 Inches

Product Description

The METAL-FAB MF-4D6 is a direct vent straight length pipe section measuring 6 inches in length, designed for use in direct vent combustion air and exhaust systems. This pipe section channels flue gases and combustion air through a sealed, two-pipe venting arrangement common in high-efficiency heating appliances. It serves as a structural run component in the vent system and is installed by qualified HVAC technicians and gas appliance service professionals who need reliable, leak-free connections between vent fittings and appliance collars.

This pipe section is suited for residential and light commercial direct vent applications where a short, straight run is needed between elbows, tees, or termination fittings. Direct vent systems draw combustion air from outside and expel exhaust through dedicated sealed piping, making pipe section integrity critical to safe appliance operation. The 6-inch straight length makes it practical for tight clearance installations and final trim runs.

Key Features

• 6-inch straight length provides a compact run for direct vent system layouts
• Designed for sealed direct vent combustion air and exhaust piping systems
• Compatible with standard direct vent pipe fittings and termination components
• Supports proper sealed-combustion system integrity to prevent flue gas infiltration

Compatibility

Designed as an OEM-style replacement or system-build component for residential and light commercial direct vent piping systems using compatible METAL-FAB direct vent pipe and fittings of the same series and diameter.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified gas appliance professional in accordance with the appliance manufacturer instructions and applicable local mechanical codes. Shut down and disconnect power and gas supply to the appliance before servicing or modifying any vent piping. Ensure all joints are fully seated and sealed per system requirements to maintain the integrity of the sealed combustion pathway. Follow IFGC guidelines and local jurisdiction requirements for direct vent system installation and clearances.