14" x 8" x 96" Loose Cleat Duct

Lukjan Rectangular Duct – Series 100 Loose Cleat, Contractor-Grade Air Distribution

The Lukjan rectangular duct is fabricated from galvanized sheet steel and designed to deliver dependable performance in HVAC supply and return air systems. Engineered to SMACNA standards, this duct section provides long-term strength, dimensional accuracy, and consistent airflow in commercial and residential applications.

Application

Used as a main trunk or branch line in engineered HVAC systems, this rectangular duct with loose cleat connection provides efficient airflow distribution while maintaining compliance with mechanical code requirements. Cross-break stiffening increases rigidity to prevent deflection under operating pressures.

Technical Specifications

• Material: Galvanized sheet steel, lock-forming quality
• Gauge: 26 ga standard; other gauges available per specification
• Coating: G-30 galvanized finish in compliance with ASTM-A653 CS Type B
• Dimensions: 14" width x 8" height x 96" length (nominal section)
• Connection: Loose cleat transverse joint system
• Reinforcement: Cross-break formed to increase panel stiffness
• Standards: Fabricated in accordance with SMACNA HVAC Duct Construction Standards

Installation Guidelines

Install per SMACNA and local code requirements. All longitudinal seams and transverse joints must be sealed using UL-listed mastic or approved tape to ensure airtightness. Duct sections require proper hanger spacing and mechanical supports to prevent sagging and maintain alignment.

Key Advantages

• Code-Compliant: Meets ASTM and SMACNA standards for duct construction
• Durable Construction: Galvanized steel resists corrosion and ensures long service life
• Efficient Assembly: Loose cleat connections simplify field installation and reduce labor
• Reinforced Panels: Cross-break stiffening prevents deformation under static pressure

The Lukjan rectangular duct with loose cleat connection provides HVAC contractors with a reliable, code-compliant solution for air distribution systems. Its heavy-duty galvanized steel construction, standardized fabrication, and cross-break reinforcement ensure long-term structural integrity and efficient performance.