4" Long Collar with Metal Damper Tab, Snap-Lock

Lukjan Snap Collar, Series 259 – 4 Inch Galvanized Steel for Secure Duct Connections

The Lukjan Series 259 Snap Collar is designed for efficient and reliable duct connections in HVAC systems. Manufactured from durable galvanized steel, this 4-inch collar provides a tight, secure fit when attaching branch ducts to trunk lines or plenums. Its snap-in design reduces installation time while maintaining a professional-grade seal that supports proper airflow.

Key Advantages

• Heavy-Gauge Galvanized Steel – Built to withstand demanding HVAC applications and resist corrosion.
• Precise 4-Inch Diameter – Ensures accurate sizing for branch duct connections without excessive adjustment.
• Snap-In Design – Simplifies installation and locks firmly into place, minimizing air leakage.
• Professional-Grade Fit – Engineered for use in both residential and light commercial duct systems.

Technical Specifications

• Series: 259
• Diameter: 4 inches
• Material: Galvanized steel
• Application: Duct takeoffs and branch connections

Installation Notes

Installation is straightforward but requires proper placement and secure fastening to avoid gaps or leaks. Contractors should ensure the collar is fully snapped and sealed to maintain airflow efficiency. Mastic or UL-rated foil tape may be applied at joints for added sealing performance. Correct installation improves overall system efficiency and reduces callbacks.

Contractor Guidance

For HVAC Professionals: The Lukjan Snap Collar provides a consistent, code-compliant connection point that saves time on the job site while maintaining airflow integrity. Its durability reduces the likelihood of rework and ensures long-term system reliability.

For Skilled Installers: While designed for easy snap-in application, attention to alignment and sealing is essential for optimal performance. Always verify collar fit and airflow path before finalizing installation.