Name: PU Air Conditioning Duct Panel Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 311191477

Thanks to its excellent products and quality services, UNT Duct is one of the leading pu air conditioning 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 Air Conditioning Duct Panel

Commonly named PU aluminum foil duct board or PU sandwich duct panel, the PU Air Conditioning Duct Panel is a premium composite material widely applied to HVAC ventilation and air conditioning duct systems.

Its integrated three-layer bonded construction includes:

Double outer layers: Durable aluminum foil with embossed or flat surface options

Middle core layer: Solid rigid PU foam that provides structural rigidity alongside excellent heat insulation performance

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
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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Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panel

Core Performance of PU Air Conditioning Duct Panel

Cleanliness & Antibacterial Performance The interior self‑cleaning coating adopts bionic lotus‑leaf effect, which greatly inhibits the adhesion of dust and contaminants. Complemented by high‑efficiency antibacterial coating, it delivers an antibacterial rate above 99%. This addresses the long‑standing pain points of dust buildup and bacterial proliferation commonly seen in conventional air ducts.

Thermal Insulation & Energy‑Saving Capacity Boasting an ultra‑low thermal conductivity of 0.02 W/m·K, it outperforms traditional metal air ducts by a large margin in thermal insulation. It effectively mitigates heat loss and surface condensation for HVAC air‑conditioning systems.

Superior Durability It possesses outstanding corrosion resistance, low‑temperature tolerance and anti‑vibration capability. Maintaining good flexibility even at ‑40 °C, the duct can serve over 20 years under corrosive working conditions such as chemical plants and marine environments - 3‑4 times the service life of conventional air ducts.

Fast‑track Installation Its weight is merely one‑third of conventional sheet‑metal air ducts. Heavy lifting machinery is not required; manual handling and on‑site installation are feasible. Flexible cutting and splicing enable easy adaptation to complex ceiling structures and confined spaces, significantly shortening overall construction cycles.

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Installation and Maintenance of PU Air Conditioning Duct Panel

01.

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.

2.

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 UNT Duct Panel

Project Case

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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.

How To Make PU Pre-insulated Straight Duct

Step 1 - Tracing: outline the duct shapes on the panel.

Step 2 - Cutting: Using manual cutting tools, cut along the panel edges and create 90 degree "V" grooves on the panel.

Step 3 - Gluing: Apply glue to the cutting surfaces of the panels.

Step 4 - Folding: After the glue is cured, fold the sides toward each other to form the straight duct.

Step 5 - Taping: The tape is applied only to the external seams of the duct where the sides of the panel were joined for air-tightness.

Step 6 - Flanging: After applying glue and positioning the steel angle bracket, process to fit the PVC or aluminum invisible flanges.

Step 7 - Reinforcement: reinforce the duct with an aluminum reinforcement bar and G.I. Shaped disks, if necessary.

Step 8 - Sealing: After the duct is assembled, seal all internal joints hermetically with silicone.

Need the complete fabrication solution?
UNT Duct supplies PU duct panels, fabrication tools, jointing accessories, reinforcement components and related materials for complete pre-insulated duct fabrication.