Lukjan OB7107CO 7 in Round to Oval 90 Degree End Boot

Product Description

The LUKJAN OB7107CO is a crimped end boot fitting that transitions from a 7-inch round duct to a 7-inch oval profile at a 90-degree angle. This sheet metal boot is used in forced-air HVAC systems to redirect airflow from round trunk or branch lines into oval end-boot connections at registers or grilles. The crimped end allows the fitting to slide directly into the next section of ductwork without additional tooling. HVAC sheet metal technicians and installers use this fitting during new construction and retrofit duct fabrication work.

This boot is suited for residential and light commercial forced-air systems where round-to-oval transitions are required at the end of a duct run. The 90-degree offset makes it practical in tight ceiling or wall cavities where a straight boot will not fit. It is a standard component in supply-air duct systems installed by licensed HVAC contractors and sheet metal workers.

Key Features

• Transitions 7-inch round duct to 7-inch oval in a single fitting
• 90-degree end boot configuration for tight-space installations
• Crimped end for tool-free slip-fit connection to adjacent ductwork
• Sheet metal construction for durability in forced-air supply applications
• Standard sizing compatible with common residential duct layouts

Compatibility

Designed as an OEM-style replacement and new-construction fitting for residential and light commercial forced-air HVAC duct systems requiring a 7-inch round to 7-inch oval 90-degree end boot transition.

Installation Notes

Installation is performed by licensed HVAC technicians or sheet metal workers. Power down the air handling system before modifying any duct section. Secure all joints with approved sheet metal screws and seal with UL 181-rated mastic or foil tape per local mechanical code requirements. Do not compress or restrict the oval outlet opening during installation, as this will reduce airflow to the connected register.

Technical Specifications

• Round Inlet Size: 7 inches
• Oval Outlet Size: 7 inches
• Angle: 90 degrees
• End Type: Crimped
• Dimensions (L x W x H): 35.25 inches

Standard Information

• Brand: LUKJAN
• Manufacturer Part Number: OB7107CO