Lukjan ob7505 5 Inch Round to Oval Duct Boot

Product Description

The LUKJAN ob7505 is a precision-formed sheet metal duct boot designed to transition a 5-inch round duct connection into an oval outlet for perimeter register installations. This fitting directs conditioned air from round branch ductwork into the oval profile required at floor, wall, or ceiling registers in forced-air systems. It measures 10 inches in length, 9 inches in width, and 11 inches in height, with a shipping weight of 0.5 pounds. HVAC technicians and sheet metal mechanics install this boot during new construction rough-in and during duct replacement or retrofit work in residential and light commercial projects.

The ob7505 is suited for perimeter register connections in residential forced-air heating and cooling systems and in light commercial applications where a 5-inch round duct feeds a floor or wall register. The oval outlet profile aligns with standard register boot openings, allowing a direct drop-in fit at the register location. It is commonly installed at the end of a branch run where round flexible or rigid duct terminates at an exterior wall cavity or floor cavity.

Key Features

• Transitions a 5-inch round duct to an oval outlet for smooth airflow distribution at the register
• Precision-formed sheet metal construction for consistent fit and dimensional accuracy
• Compact profile at 10 inches long, 9 inches wide, and 11 inches tall for tight installation spaces
• Lightweight at 0.5 pounds for easy handling during overhead or floor cavity installation
• Suited for both new construction rough-in and retrofit duct work in residential and light commercial systems

Compatibility

Designed as an OEM-style replacement and new-construction fitting for residential and light commercial forced-air duct systems requiring a 5-inch round to oval boot transition at a perimeter register location.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal mechanics. Shut down the air handling system before installing or modifying ductwork fittings. Secure the boot to the branch duct using sheet metal screws and seal all joints with listed duct sealant or foil tape in accordance with local mechanical codes and SMACNA guidelines. Ensure the oval outlet is properly aligned with the register opening before fastening the register to the boot collar.