Thanks to its excellent products and quality services, UNT Duct is one of the leading polyurethane (pu) duct 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.

Polyurethane (PU) Duct Board

Polyurethane (PU) duct board is a pre-insulated panel specifically designed for Heating, Ventilation, and Air Conditioning (HVAC) systems. It serves as a lightweight, all-in-one alternative to traditional metal ductwork, combining the air channel, thermal insulation, and sometimes a vapor barrier into a single material.

Composition and Structure

The board has a sandwich structure:

Core: A rigid closed-cell polyurethane (PU) foam that provides excellent thermal insulation.

Facings: Both sides are laminated with a protective layer, most commonly embossed aluminum foil, but options like galvanized steel (GI sheet) or color steel are also available for added durability in outdoor or demanding environments.

Key Advantages of Polyurethane (PU) Duct Board

PU duct boards offer several benefits over traditional metal ducts:

Superior Thermal Insulation:

With a very low thermal conductivity (typically 0.020 W/m·K), it minimizes energy loss, keeping conditioned air at the desired temperature and reducing HVAC operating costs by an estimated 15-25% .

Lightweight & Easy Installation:

The material weighs significantly less than metal ducts (about 1/3 the weight), making it easier to transport, handle, and cut on-site. This can reduce installation time by up to 50% and lower labor costs .

Air Tightness:

When properly sealed, these ducts can be up to eight times more airtight than traditional metal ductwork, preventing air leaks and further improving energy efficiency .

Acoustic Performance:

The dense foam core acts as a natural sound barrier, dampening noise from fans and airflow, which contributes to quieter indoor environments .

Durability & Hygiene:

The closed-cell structure resists moisture absorption, preventing mold and mildew growth. The smooth inner lining does not release fibers and is easy to clean, ensuring high indoor air quality