Name: PU Pre-insulated Aluminum Duct Panel Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 305311762

Thanks to its excellent products and quality services, UNT Duct is one of the leading pu pre-insulated aluminum duct panel 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 Pre-insulated Aluminum Duct Panel

PU Aluminum Duct Sheet (also known as PU aluminum foil duct panel or PU sandwich duct panel) is a high-performance composite material used primarily in HVAC (Heating, Ventilation, and Air Conditioning) air duct systems.

It consists of three bonded layers:Two Outer Layers: High-strength aluminum foil (typically embossed or plain).Core Layer: Rigid polyurethane (PU) foam, which acts as both a structural support and thermal insulator.

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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Economic and Construction Efficiency of PU Pre-insulated Aluminum Duct Panel

Although the raw material cost per square meter of PU pre-insulation panels is higher than that of traditional galvanized iron sheets, from the perspective of overall installation cost and operating cost, it has extremely high cost-effectiveness:

Traditional ductwork process: Cutting and shearing of iron sheets -> Making the bite edges -> On-site hoisting -> Secondary wrapping with insulation cotton -> Coiling protective tape (a cumbersome process)

PU pre-insulated air duct: Plate cutting -> Apply adhesive and lay out lines -> 45° joint bonding -> Tape sealing -> Direct hanging (one-step process)

Project duration reduced by over 50%: Traditional ducts require two processes - "installing the ducts first, then covering with insulation cotton"; while PU sheets "come with built-in insulation", they can be formed by using dedicated cutting tools, glue bonding, and aluminum foil tape sealing, resulting in a 2 to 3 times increase in construction speed.

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Why choose UNTDuct

UNT Pre-insulated Ductwork

Production Progress of Duct Panel

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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