Seal-tite 1373L-041006 Left End Boot 4x10 6-neck 2in Ext

Product Description

The SEAL-TITE 1373L-041006 is a left end boot fitting designed for residential and light commercial HVAC duct systems. It measures 4 inches by 10 inches at the main body with a 6-inch neck and includes a 2-inch extension, making it suitable for tight or offset duct-to-register connections. Left end boots are used where the supply register sits at the end of a duct run and the connection must exit from the left side. HVAC installers and sheet metal contractors use this fitting when laying out trunk-and-branch duct systems that require precise directional terminations at floor, wall, or ceiling registers.

This boot is appropriate for new construction and retrofit duct installations where a 4-inch by 10-inch register opening is required. The left-hand orientation suits applications where the duct approaches the register from the right and must terminate on the left side of the boot. The 2-inch extension provides additional length to reach registers set deeper into a floor or wall cavity, reducing the need for separate extension collars in the run.

Key Features

• Left-hand end boot orientation for directional duct terminations
• 4 inches x 10 inches main body fits standard 4x10 floor or wall registers
• 6-inch neck size for connection to matching round duct
• Integrated 2-inch extension eliminates need for a separate extension collar
• Purpose-built for trunk-and-branch residential supply duct systems

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial HVAC duct systems requiring a 4-inch by 10-inch left end boot with a 6-inch neck connection.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Shut down the air handling unit and confirm the system is depressurized before cutting or connecting ductwork. Secure the boot to the duct collar and register box using sheet metal screws and seal all joints with UL 181-rated mastic or approved metal foil tape per local mechanical code requirements. Do not use cloth-backed duct tape as a permanent sealant.

Technical Specifications

• Boot Orientation: Left End
• Main Body Size: 4 inches x 10 inches
• Neck Size: 6 inches
• Extension Length: 2 inches

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 1373L-041006