Thanks to its excellent products and quality services, UNT Duct is one of the leading Polyurethane Composite Duct Board manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.
Polyurethane Composite Duct Board
Polyurethane Composite Duct Board These panels are made with polyurethane foam core, clad with aluminium foil or solid aluminium sheet on both sides. Energy efficient and eco-friendly, they are a popular choice for HVAC air duct systems.
Unlike conventional galvanized steel ducting, our pre-insulated duct panels deliver solid performance while being much lighter. Installation is simpler too - everything goes up in one fitting step. This product is gaining wide acceptance across global projects.
We offer different facings to match your project needs: 60 micron aluminium foil, 800 micron aluminium sheet, or pre-painted GI sheet.
Panel Structure: Silver Alu. / PU Foam / Silver Alu. Sheet Foam Density: 50kg/m³ Panel Size: 3950mm1200mm20mm Alu. Foil: 60 Micron (Embossed) Alum. Sheet: 180 Micron (Embossed)

Polyurethane Composite Duct Board
Our polyurethane composite duct board is a single sandwich panel: PU foam at the centre, covered by aluminium layers on both faces. It is widely adopted for HVAC ventilation duct systems for its energy-saving performance.
One big advantage over regular metal ducts is simple installation. No extra insulation wrapping after forming the duct. The panel itself is sturdy but not heavy, so handling and machining on site is less labour-intensive.
Advantages of Polyurethane Composite Duct Board:
Integrated Insulation
Insulation is built into the panel. Unlike traditional metal duct, you don't need to source and fit insulation separately, simplifying your whole project schedule.
Good Structural Stability
The PU core keeps its shape well under normal operating conditions. Properly fabricated ducts will not deform easily during service.
Flexible Facing Selection
We offer several surface options to suit different environments, whether you need budget foil, tougher aluminium sheet or corrosion-resistant pre-painted GI.
Less Complex Installation
Duct fabrication and insulation are completed in one workflow. Fewer site processes mean fewer risks of poor insulation workmanship.
Cost-effective HVAC Solution
It balances solid insulation performance and material cost, a practical choice for office buildings, shopping malls and hotel ventilation systems.
PU ALU Pre-insulated HVAC Duct




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