12" x 8" x 96" Trunk Duct

12" x 8" x 96" Rectangular Trunk Duct – Contractor-Grade Air Distribution

The 12" x 8" x 96" trunk duct is fabricated from galvanized sheet steel and designed for supply and return air distribution in HVAC systems. Its construction complies with SMACNA standards, ensuring strength, dimensional accuracy, and long-term performance in both commercial and residential installations.

Technical Specifications

• Material: Galvanized sheet steel, 26 gauge standard (other gauges available per specification)
• Finish: G-30 coating in accordance with ASTM-A653 CS Type B
• Dimensions: 12 inches wide x 8 inches high x 96 inches long
• Connection: Loose cleat transverse joint system
• Reinforcement: Cross-break formed to increase rigidity and reduce deflection
• Compliance: Fabricated per SMACNA HVAC Duct Construction Standards

Application

This rectangular duct is designed to serve as a main trunk line in HVAC systems, distributing airflow evenly throughout the system. It is suited for use in residential, commercial, and light industrial projects where durability and compliance with code are required.

Installation Guidelines

Install in accordance with SMACNA and local building code requirements. All seams and joints must be sealed with UL-listed duct mastic or tape to maintain airtightness and meet energy efficiency standards. Proper support spacing is required to prevent sagging and ensure alignment of duct sections.

Key Advantages

• Code-Compliant: Meets ASTM and SMACNA fabrication requirements
• Durable Fabrication: Galvanized steel resists corrosion and maintains shape under load
• Efficient Assembly: Loose cleat design allows fast field connections
• Structural Integrity: Cross-break stiffening prevents distortion and adds rigidity

The 12" x 8" x 96" rectangular trunk duct provides HVAC contractors with a durable, code-compliant solution for engineered air distribution systems. Its standardized dimensions, galvanized finish, and loose cleat connection system ensure professional installation and long-term system performance.