Thanks to its excellent products and quality services, UNT Duct is one of the leading pu pre-insulated ducting board 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 Ducting Board

Are you looking for an HVAC air duct system that is lighter, more energy-efficient, and faster to install than traditional sheet metal ducts? Let us introduce you to the PU (Polyurethane) pre-insulated ducting board – a next-generation solution for air distribution.

What is a PU Ducting Board?

It is a rigid, sandwich-type panel. The core is made of high-density rigid polyurethane (PU) foam, which is permanently bonded between two layers of reinforced aluminum foil (or other facings). This creates a single, all-in-one material that acts as both the air channel and the thermal insulation.

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)

Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panel

Why Choose PU Ducting Board Over Traditional Ducts?

Feature	Traditional Sheet Metal + Wrap	PU Pre-Insulated Board
Thermal Performance	Moderate (prone to thermal bridging)	Excellent – continuous insulation, no bridges
Weight	Heavy	Up to 80% lighter
Installation Time	Slow (cut, join, seal, wrap)	Fast (cut, fold, glue – 4x faster)
Air Leakage	Higher risk at joints	Extremely low (sealed joints)
Corrosion Risk	Yes (rust in humid conditions)	No (all materials are corrosion-proof)
Condensation	Common if insulation fails	Virtually eliminated

Key Benefits for Your Project

1. Superior Energy Efficiency

PU foam has one of the lowest thermal conductivity values (≈0.020 W/m·K). This means less heat gain/loss, lower cooling/heating loads, and reduced electricity bills for your client.

2. Clean & Healthy Air

The smooth, non-porous inner aluminum surface resists dust, mold, and bacterial growth. It does not shed fibers (unlike fiberglass duct boards) and is easy to clean, supporting IAQ (Indoor Air Quality) requirements for hospitals, schools, and offices.

3. Quick & Clean Installation

No heavy machinery or welding required.

Ducts are fabricated on-site using simple hand tools.

Dust-free, noise-free process – ideal for retrofit projects in occupied buildings.

Cuts labor cost significantly.

4. Lightweight but Strong

The PU core provides excellent mechanical strength. The duct is rigid enough to withstand typical handling and air pressure (up to 1500 Pa or more), yet one person can easily carry a full board.