Seal-tite 1373L-021206 Left End Boot 2x12 in 6 in with 2 in Extension

Product Description

The SEAL-TITE 1373L-021206 is a left-end duct boot designed for connecting supply air ductwork to floor or ceiling registers in residential and light commercial HVAC systems. This boot measures 2 inches by 12 inches with a 6-inch collar opening and includes a 2-inch extension, giving installers added flexibility when fitting tight or offset plenum and joist-bay runs. The left-hand orientation suits specific layout configurations where a standard or right-hand boot would not align correctly with the supply trunk or register. HVAC technicians and sheet metal installers rely on this style of end boot to terminate rectangular duct runs cleanly at the register face.

This end boot is suited for residential forced-air heating and cooling systems, particularly in new construction and retrofit applications where rectangular supply duct terminates at a wall, floor, or ceiling register opening. The left-end configuration is selected based on the direction the duct approaches the register box. The included 2-inch extension accommodates subfloor or ceiling material thickness, helping the collar land flush at the finished surface. This fitting is a standard component in trunk-and-branch and radial duct layouts common in single-family and multi-family construction.

Key Features

• Left-end orientation for layouts where duct approaches from the right side of the register opening
• 2 inches by 12 inches rectangular duct connection matches standard supply trunk sizing
• 6-inch collar opening aligns with common floor and ceiling register sizes
• 2-inch integral extension accommodates finished floor or ceiling material thickness
• End-boot design provides a clean, sealed termination point for rectangular duct runs

Compatibility

Designed as an OEM-style replacement and new-installation end boot for residential and light commercial forced-air HVAC duct systems terminating at standard floor, ceiling, or wall registers.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal workers following local mechanical codes and SMACNA duct construction standards. Shut down and lock out the air handler or furnace before modifying any supply duct. Seal all joints with listed duct mastic or UL 181-rated tape to meet energy code requirements. Confirm the left-hand orientation matches the field layout before fastening to avoid having to reorder the opposite hand.

Technical Specifications

• Duct Connection Size: 2 inches x 12 inches
• Collar Opening: 6 inches
• Extension Length: 2 inches
• End Orientation: Left

Standard Information

• Brand: SEAL-TITE
• Manufacturer Part Number: 1373L-021206