White PVC Rectangular Flat Duct 256x48mm Triple-Channel Hollow Profile for Fresh Air Ventilation Underfloor/Floor Supply System

White PVC Rectangular Flat Duct 256x48mm — Triple-Channel Underfloor Supply Duct

A white PVC rectangular flat duct with a triple-channel hollow core for underfloor and floor-level fresh air supply. The three internal chambers are separated by two ribs, which stiffens the section so it can carry load above while keeping the airflow path smooth. The matte surface and rounded corners make it suitable for visible as well as concealed installation.

Key Features

• Triple-channel core — three chambers split by two internal ribs for stiffness
• Shallow 48 mm height — fits under floor build-ups and above structure
• Smooth matte finish — rounded corners for a clean appearance
• 8 m per piece — long lengths reduce the number of joints
• Top or underfloor supply — suits floor supply distribution layouts

Technical Specifications

Typical Applications

• Underfloor fresh air supply distribution in apartments
• Floor-level supply runs with limited build-up height
• Projects where the duct is partly visible in the finished space

System Matching

Combine with our PVC TT flat duct, insulated rectangular duct, floor supply air outlet assembly and ABS distribution box.

FAQ

Q: What does the triple-channel core do?
A: The two internal ribs stiffen the section and separate the airflow path, which helps the duct carry load above it.

Q: How long is each piece?
A: 8 metres, as listed in the specification table.

Q: Is an insulated version available?
A: Yes, see our insulated rectangular flat duct with rubber-foam insulation and foil wrap.