Lukjan to5407 Duct Board Top Takeoff 7 Inches

Product Description

The LUKJAN to5407 is a 7-inch duct board top takeoff fitting designed for use in low-pressure residential and light commercial HVAC duct systems. Part of the Series 320 lineup from Lukjan Metal Products, this fitting connects branch runs to a main duct board trunk, directing conditioned air from the plenum to individual supply runs. It is sized at 7 inches and is installed by HVAC technicians during new construction or system modification work. The fitting ships at 0.5 pounds and fits within a package envelope of 13 inches by 8 inches by 10 inches.

Top takeoff fittings like the to5407 are used where branch duct connections exit from the top surface of a duct board trunk line. This configuration is common in attic-installed air distribution systems and in applications where vertical branch runs are needed. The Series 320 designation indicates this fitting is matched to standard duct board system construction methods used in residential HVAC installations.

Key Features

• 7-inch diameter sizing for standard branch run connections
• Top-mount configuration for vertical branch duct exits from trunk lines
• Part of the Lukjan Series 320 duct board fitting system
• Lightweight at 0.5 pounds for easy single-technician handling
• Manufactured by Lukjan Metal Products, a dedicated HVAC sheet metal manufacturer

Compatibility

Designed as an OEM-style fitting for use with duct board trunk line systems requiring a 7-inch top takeoff connection in residential or light commercial HVAC applications.

Installation Notes

Installation is performed by licensed HVAC technicians. Shut down the air handling unit and confirm the system is de-energized before connecting any duct fittings. Secure the fitting to the duct board trunk using appropriate duct board adhesive and approved closure systems per SMACNA and local mechanical code requirements. Do not operate the system until all joints are properly sealed.