HVAC Duct Board Series

GB Duct, professional specialist in HVAC ventilation system, offers premium phenolic, PIR, PU and fiberglass duct panels with full customized support.

PIR Pre-Insulated Duct Boards

PIR HVAC Duct Board: Complete Turnkey System, Ready to Install

We deliver far more than just PIR HVAC duct boards — a fully integrated duct system from air handlers to terminal diffusers. Every component is precision-engineered for seamless integration, delivering superior airtightness, fire safety and structural integrity.

Our all-in-one package includes AHU flexible connectors, supply air plenums, reinforced duct sections, flange systems, hangers, fire dampers, wall sleeves, volume control dampers and grille diffusers. All joints are sealed with PIR-specific aluminum foil tape and sealant. The system uses standard suspension brackets, with optional waterproofing for outdoor installations. This is a true ready-to-install solution: all components arrive pre-matched for immediate on-site assembly, drastically cutting installation time.


Professional Fabrication & Installation Support

We stand behind your entire project, not just our duct boards:

·Exclusive accessory kit — flanges, connectors, hangers and sealants engineered specifically for PIR duct boards, eliminating compatibility issues and quality risks

·Standardized installation resources — comprehensive manuals and step-by-step videos covering cutting, grooving, flange bonding, reinforcement and mounting

·Pressure engineering support — custom reinforcement plans and hanger spacing calculations tailored to your system's pressure requirements, ensuring full code compliance

·Remote & on-site technical assistance — our engineers support complex installations including fire damper integration, wall penetrations and structural transitions to keep your project on schedule


GB Ductwork System Key Components

The GB Duct System is a globally leading, innovative solution for pre-insulated HVAC air ductwork. Boasting easy installation and minimal maintenance, it sets a new benchmark in air distribution technology.
Beyond premium pre-insulated aluminum panels, GB provides a complete one-stop system: precision accessories, specialized machinery, custom tools and professional technical support — ensuring perfect fabrication and hassle-free installation.

PU/PIR/Phenolic/Fiberglass Core Sandwich Panels, Clad with Aluminum Foil, Aluminum Sheet & Pre-painted Steel for HVAC Ducts
Flanges, profile bars and custom duct fittings engineered for seamless duct connection and installation.
Advanced bending machines, manual cutting tools and CNC routers for precise workshop fabrication and on-site installation.
• 1 pc Double 45°/22.5° V-Shape Cutter
• 1 pc Left 45° Cutter
• 1 pc Right 45° Cutter
• 1 pc 90° Straight Cutter
• 1 pc 45° Edge Side Cutter
• 2 pcs Tape Measure
• 1 pc 3mm Hex Wrench
• 1 pc 5mm Hex Wrench
• 1 pc Anti-rebound Rubber Hammer
• 50 pcs Spare Replacement Blades
• 2 pcs Plastic Scraper
• 1 pc Utility Knife
• 2 pcs Marking Pen
• 1 pc Adjustable Tape Marker
Professional technical & commercial support for consultants and contractors, delivering guaranteed optimal system performance.

Why Choose Us

GB DUCT | HVAC & Fire Smoke Exhaust Duct Specialist, Since 1984

Rich Industry Experience

With over 40 years of experience in the HVAC industry, we have completed more than 10,000 projects worldwide.

Strong Production Capacity

We own 10 modern automatic production lines with an annual output capacity of 300,000 square meters, guaranteeing stable quality and on-time delivery even for bulk orders.

Professional Technical Team

Our experienced engineering team provides one-stop customized solutions and full-process professional technical support for all your project demands.

Competitive Factory Price

As a direct manufacturer without middlemen markup, we offer genuine factory direct prices, helping you save up to 20% cost compared with trading companies.

Comprehensive After-sales Service

We provide complete after-sales support, including on-site installation guidance, professional technical training and efficient problem solving anytime.

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