Name: PU FOAM DUCT SHEET Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 308552327

Thanks to its excellent products and quality services, UNT Duct is one of the leading pu foam duct sheet 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.

PU FOAM DUCT SHEET

PU foam duct sheet is a lightweight, pre-insulated sandwich panel with aluminum foil facings and a rigid polyurethane foam core. Designed for HVAC systems, it offers superior thermal insulation (0.02 W/m·k), energy efficiency, and quick installation, directly replacing traditional metal ductwork that requires separate lagging .

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 50kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

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Material structure and specification system of PU FOAM DUCT SHEET

The PU foam duct sheet adopts a "sandwich" core structure design. The middle layer is hard polyurethane (PU) foam, and the double-sided aluminum foil is used as the protective layer. This structure endows the sheet with excellent physical properties.
From the perspective of specifications, the product system is complete and can be adapted to projects of different scales and requirements:
Thickness specification: The mainstream thickness ranges from 10mm to 40mm, and the commonly used thickness is 20mm, which can meet different wind pressure and insulation requirements.
Size specification: The standard board lengths are 3950mm, 2950mm, 2900mm, etc. The width is uniformly 1200mm, which is convenient for transportation and on-site layout and cutting.
Surface layer differences: 80-micron embossed aluminum foil is suitable for indoor regular environments; 200-micron aluminum plates or color-coated steel plates are suitable for outdoor use or scenarios with higher requirements for bending strength; the smooth aluminum foil surface layer is specifically used in clean engineering projects such as hospitals and pharmaceuticals.

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Physical Properties and Energy Saving of PU FOAM DUCT SHEET

The thermal insulation and heat preservation performance is the core advantage of PU ductboard. Data shows that its thermal conductivity can be as low as 0.02 W/(m·k), significantly better than traditional glass wool (about 0.04 W/(m·k) or more).

This means that under the same thickness, the insulation effect of PU board doubles, which can significantly reduce the loss of cold and heat during the transportation process, making the central air conditioning system operate closer to the designed condition and achieving remarkable energy-saving effects.

The mechanical strength data is also excellent:
Compressive strength: 202 kPa
Tensile strength: 423 kPa
These data indicate that this sheet material has sufficient structural strength to withstand the normal foot traffic and external pressure during installation and use, and is unlikely to deform or deteriorate.

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Why choose UNTDuct

UNT Pre-insulated Ductwork

Project Case of UNT Ductwork

PRE-INSULATED DUCT vs G.I. DUCTWORK

Metric	20mm PU Pre - Insulated Duct (with 0.08mm Alu. Foil, )	0.5mm G.I Duct + 30mm Rubber Plastic (40-90kg/m³)
Fire Safety	Compliant (Class 0/BS 476, AS 1530.3). Self-extinguishing PU core, low toxic smoke, non-combustible alu foil.	G.I non-combustible; rubber plastic fire-retardant but requires coating to meet strict codes.G.I
Thermal Insulation	Excellent. λ=0.020 W/m·K, no thermal bridging. 20mm integrated structure ensures consistent insulation.	Fair. λ=0.035 W/m·K, thermal bridging at G.I joints. 30mm insulation offset by metal conductivity.
Hygiene & Air Quality	Superior. Non-porous alu foil, smooth inner surface, moisture-resistant PU. Meets cleanroom/hospital standards.	Poor. Porous rubber plastic traps dust/mold; G.I-insulation gaps breed pathogens.
Lightweight	1.4-1.5 kg/m². Ultra-light, reduces structural load; ideal for retrofits/timber-framed buildings.	5.1–6.3 kg/m². Heavy G.I base + bulk insulation; requires reinforced supports.
Energy Efficiency	Excellent. 20–30% lower HVAC energy consumption. Minimizes heat gain/loss in conditioned air.	Low. 20–30% higher energy loss due to inferior insulation and thermal bridging.
Ease of Construction	Easy. Factory-prefabricated tongue-and-groove joints. No separate insulation step; 40–60% less labor time.	Complex. Two-step on-site process: G.I duct fabrication + rubber plastic wrapping. Labor-intensive, prone to gaps.
Quiet Operation	Good. PU core absorbs 10–15 dB airflow noise; alu foil dampens vibration.	Fair. Rubber plastic provides basic sound reduction, but G.I vibration and insulation gaps reduce efficiency.
Space Savings	Excellent. 20mm total thickness (all-in-one). Fits tight ceilings/retrofit cavities.	Poor. 30.5mm total thickness (0.5mm G.I + 30mm insulation). Bulky, requires larger installation space.
Environmental Friendliness	Balanced. CFC/HCFC-free PU, recyclable alu foil. 20–30-year lifespan; net carbon positive in 1–3 years.	Low. Rubber plastic non-recyclable; 10–15-year lifespan. Frequent replacement increases waste; higher energy emissions.
Air Leakage	Superior. ≤2% air leakage (EN 1507, AS/NZS 3660.1). Airtight factory joints + alu foil vapor barrier.	Poor. 5–10% air leakage. On-site sealing gaps; separate vapor barrier required.

Performance comparison based on UNT Duct product data and standard system configurations. Actual performance may vary depending on system design, installation method and project conditions.

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