Name: Polyurethane Foam Duct Boards Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 310830996

Thanks to its excellent products and quality services, UNT Duct is one of the leading polyurethane foam duct boards 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 Foam Duct Boards

Polyurethane Foam Duct Boards, alternatively designated PU aluminum foil duct panel and PU sandwich duct panel, is a high-spec composite material intended for HVAC (Heating, Ventilation and Air Conditioning) air duct applications.

The product adopts a trilaminar laminated structure composed of:

Dual outer facings: High-tensile aluminum foil, supplied in plain or embossed variants

Internal core substrate: Rigid polyurethane (PU) foam, functioning as structural backing and thermal insulating medium

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 45kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver and Black
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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How does the Polyurethane Foam Duct Boards perform in terms of energy efficiency?

Polyurethane Foam Duct Boards has very good energy-saving performance.

1.High-density rigid PU foam core delivers superior thermal insulation, effectively blocking heat penetration and cutting heat/cold loss in air circulation.

2. Double-sided aluminum foil forms fully sealed structure with excellent airtightness, drastically reducing air leakage loss.

3. Stable insulation performance lightens the running load of air conditioning units, lowering frequent startup and power consumption.

4. It avoids extra heat compensation needed for traditional ductworks, stabilizing system operation efficiency all year round.

5. Overall optimized ventilation performance greatly reduces long-term operational energy costs for HVAC projects.

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Installation and Maintenance of Polyurethane Foam Duct Boards

Modular installation

Standardized production of panels (standard size 1200mm×3950mm, customizable length available), fixed by tongue and groove splicing or bolts. The average daily installation area per person can reach 30 square meters, which shortens the construction period by 50% compared with traditional on-site spray insulation.

Low maintenance cost

The surface coating is easy to clean and only requires wiping to remove dust on a daily basis. If there is local damage, it can be filled with a special PU repair agent without the need for overall replacement. Its service life can reach 15 to 20 years, during which no frequent maintenance is required.

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Why choose UNTDuct

UNT Pre-insulated Ductwork

Project Case of UNTDuct

Project Case

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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