Name: PU Insulation Board Duct Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 305870460

Thanks to its excellent products and quality services, UNT Duct is one of the leading pu insulation board duct 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 Insulation Board Duct

With high-performance PU foam serving as its core substrate, PU Insulation Board Duct are lightweight composite components. Uniting thermal insulation performance, mechanical stability and certified fire protection in a single integrated structure, they enjoy extensive use across HVAC construction projects.

Adopting a modular all-in-one design, this duct solution lowers system energy waste, shortens on-site assembly time, and maintains reliable ventilation efficiency over prolonged operation.

Structure: Silver Aluminum foil/ PU Foam/ Silver Aluminum foil
Size: 3950*1200*20mm
Foam Density: 40-45kg/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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Outstanding Thermal Insulation & Ultra Energy Saving of PU Insulation Board Duct

Outstanding Thermal Insulation & Ultra Energy Saving is one advantage of PU Insultaion Board Duct.

Ultra-low thermal conductivity: only 0.018–0.020 W/(m·K), far better than glass wool, XPS ,etc. An 20mm PU panel delivers insulation equal to 50mm glass wool.

High closed-cell rate (>96%) eliminates thermal bridges, restricts heat gain/loss of conditioned air.

Cuts HVAC power consumption by 20–30%, greatly reduces long-term electricity operating costs for commercial buildings.

Integral one-piece insulation avoids extra wrapping work required for metal ducts.

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Service Life, Environmental Protection and Hygiene of PU Insulation Board Duct

Long-Term Durability Data

PU features a stable cyclic macromolecular structure. Its thermal conductivity rises by no more than 5% over 25 years, with a designed service life of 20–25 years. In comparison, galvanized steel ducts suffer corrosion and air leakage within 5–8 years, while rock wool tends to pulverise and lose performance after only 5 years. This delivers a 70% reduction in total life-cycle replacement costs.

Eco-Friendly Performance & Testing Results

Emissions of hazardous substances including formaldehyde and benzene are zero. The material contains no asbestos. The foaming material loss rate during production is merely 3%, and offcuts can be recycled for reprocessing. It qualifies for credit points under LEED green building standards and China's Three-Star Green Building Certification schemes.

Hygienic & Cleanroom Performance

Dual-sided smooth antibacterial aluminium foil facings cut internal airflow resistance by 12%. The surface resists dust deposition and mould proliferation. Ideal for ventilation systems in food processing plants and hospital operating room purification projects. No extra antibacterial lining coating is required, eliminating additional consumable expenses for cleanroom upgrades.

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UNT Pre-insulated Ductwork

Project Case of Duct Panel

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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