20" x 10" x 96" Trunk Duct

Lukjan Series 100 Rectangular Duct – Loose Cleat Connection for HVAC Systems

The Lukjan Series 100 rectangular duct with loose cleat connection is engineered for commercial and residential HVAC distribution systems where durability and precision fit are critical. Manufactured from galvanized steel, this duct section provides consistent airflow and reliable performance across a variety of applications.

Key Features

• Construction: Fabricated from galvanized steel in accordance with SMACNA standards for rectangular ductwork.
• Connection Type: Loose cleat configuration, allowing fast field installation and secure joints.
• Cross-Breaking: Stiffened with cross-breaks to prevent oil canning and maintain dimensional integrity.
• Versatility: Suitable for supply, return, and exhaust duct systems in both new construction and retrofit projects.

Technical Specifications

• Material: Galvanized steel, lock-forming quality
• Coating: G-30 per ASTM A653 CS Type B
• Gauge Options: Typically 26–22 gauge depending on duct dimensions
• Connection: Loose cleat type, compatible with industry-standard cleats
• Standards: Manufactured to SMACNA construction requirements

Installation Notes

The loose cleat design allows rapid connection of duct sections with minimal hardware. For best results, use appropriate cleat material thickness and length to match duct gauge. Ensure proper sealing at joints per project specifications to maintain system efficiency and minimize leakage.

Professional Application

Designed to meet the demands of mechanical contractors, the Lukjan Series 100 duct provides consistent dimensional accuracy, strength, and reliability on job sites. Its standardized fabrication and compliance with recognized industry codes make it a dependable choice for HVAC system installers.