Lukjan rx1005 Metal Tab Collar 5 Inches Short

Product Description

The LUKJAN rx1005 is a short metal tab collar designed for 5-inch round duct connections in residential and light commercial HVAC systems. The crimped end simplifies fitting insertion and helps seat the collar securely against duct board, flex duct, or sheet metal plenum openings. Tab collars of this type are a standard component in forced-air distribution systems, used to transition between a plenum or trunk line and a branch run. Licensed HVAC technicians and sheet metal contractors install this fitting as part of supply or return air duct assemblies.

The rx1005 is suited for new construction duct installations and retrofit work where a 5-inch round branch takeoff is needed. The short collar profile works well in tight plenum spaces where a longer fitting would create clearance issues. It seats into duct board cutouts or connects to flex duct with standard mechanical fasteners and mastic or approved tape per local code requirements.

Key Features

• 5-inch round diameter fits standard branch duct runs
• Short body length accommodates confined plenum spaces
• Crimped end allows straightforward duct or flex connection
• Metal tab design provides a positive mechanical lock to the plenum opening
• Compatible with mastic sealant and UL-listed foil tape for code-compliant sealing

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 5-inch round duct branches in residential and light commercial forced-air HVAC systems.

Installation Notes

Installation should be performed by a qualified HVAC technician or sheet metal contractor in accordance with SMACNA ductwork standards and local mechanical codes. Shut down the air handler and confirm the system is de-energized before cutting into an existing plenum or duct assembly. Seal all collar joints with code-approved mastic or UL-listed foil tape — do not rely on duct tape alone. Secure flex duct connections with an approved clamp and additional sealant as required by the applicable energy code.

Technical Specifications

• Diameter: 5 inches
• Style: Short
• Connection Type: Crimped metal tab collar
• Material: Metal

Standard Information

• Brand: LUKJAN
• Manufacturer Part Number: rx1005