Lukjan to5406 Duct Board Top Takeoff 6 Inches

Product Description

The LUKJAN to5406 is a 6-inch duct board top takeoff fitting designed for use in residential and light commercial HVAC duct systems. Manufactured by Lukjan Metal Products, this Series 320 fitting connects branch supply runs to a duct board trunk, directing conditioned air from the main plenum into individual supply runs. The top takeoff configuration mounts to the top face of a duct board trunk, providing a clean, low-turbulence transition. Licensed HVAC technicians and sheet metal mechanics are the primary installers for this type of fitting.

This fitting is used in forced-air heating and cooling systems where duct board is the primary trunk material. It suits new construction and retrofit applications where a top-mounted 6-inch branch takeoff is required. The fitting is compatible with standard 6-inch round flexible duct or rigid round duct branch runs connected to duct board trunk systems.

Key Features

• 6-inch nominal size for connection to standard 6-inch round duct branches
• Top takeoff design for mounting to the top face of a duct board trunk
• Series 320 product line from Lukjan Metal Products
• Lightweight at 0.5 pounds for easy single-technician handling
• Compact package dimensions of 12 inches by 8 inches by 9 inches

Compatibility

Designed as an OEM-style replacement or new-installation fitting for duct board trunk systems requiring a 6-inch top takeoff connection point in residential or light commercial forced-air HVAC applications.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal mechanic in accordance with SMACNA guidelines and applicable local mechanical codes. Shut down the air handler and confirm the system is de-energized before cutting into the duct board trunk. Use a proper duct board knife and straightedge to cut the penetration cleanly, and seal all connections with UL 181-rated duct board tape or mastic to maintain system integrity. Do not use standard cloth duct tape on duct board systems.