Metal-fab MF-5DAL Direct Vent Variable Length Pipe

Product Description

The METAL-FAB MF-5DAL is a direct vent variable length pipe section designed for use in direct vent heating appliance installations. It adjusts from 3 inches to 10 inches in length, providing flexibility during venting system assembly where fixed-length sections do not accommodate the required run. This component is installed by licensed HVAC technicians and plumbers working on direct vent furnaces, boilers, and water heaters that require concentric or co-axial venting configurations.

The MF-5DAL is suited for residential and light commercial direct vent applications where precise venting lengths must be achieved without field cutting of standard vent pipe. It is particularly useful in tight installation scenarios where a fixed-length section would leave a gap or cause interference with surrounding structure. When compatible appliances require a short connecting run, this adjustable section fills that role cleanly and without additional fabrication.

Key Features

• Variable length adjustment from 3 inches to 10 inches eliminates the need for field cutting
• Designed for direct vent heating appliance venting systems
• Simplifies installation in confined or variable-clearance spaces
• METAL-FAB construction suited to standard direct vent assembly methods

Compatibility

Designed as an OEM-style component for use in direct vent venting systems requiring a short adjustable pipe section. Verify appliance and vent system manufacturer specifications before installation to confirm fitment.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified plumber familiar with direct vent system requirements. Shut down and de-energize the appliance fully before servicing or modifying any venting components. Follow all applicable local mechanical codes and the appliance manufacturer venting instructions for proper assembly, sealing, and support of vent sections. Do not exceed the adjustment range of the fitting or modify the component to achieve additional length.