Polished Metallized Polyester Insulated Flexible Duct for Industrial Use

Insulated Flexible Duct
The MKFlex Insulated Flexible Duct (MKF-IFD#21) is a high-performance, fully flexible HVAC ducting solution engineered for superior airflow and thermal efficiency. It has a rigid wire helix permanently bonded to the core, making it robust and easy to install in both heating & cooling systems.

Key Specifications & Performance

• Inner core wrapped with 25 mm thick fiberglass wool (density ~ 16 kg/m³)

• Covered with a multi-layer metallized polyester film vapour barrier jacket

• Temperature range: -26 °C to +60 °C

• Maximum air velocity: 5000 FPM

• Static pressure rating:
   • Diameters 4″-12″: +6″ W.G. (positive), -0.8″ W.G. (negative)
   • Diameters 14″‐20″: +4″ W.G. (positive), -0.8″ W.G. (negative)

• Standard length: 25′

• Available diameters: 4″, 6″, 8″, 10″, 12″, 14″, 16″, 18″, 20″

Advantages

• Excellent thermal insulation helps reduce energy loss

• Vapour barrier prevents moisture ingress

• Class 1 Air Duct for safety; tested for fire resistance; emits no toxic gases under fire

• Easy to install, cut, and handle; individual box packing reduces damage during transport

Applications
Best suited for commercial and residential HVAC systems, industrial ventilation, clean rooms, pharmaceutical & healthcare facilities, data centres, educational buildings, and other settings demanding energy-efficient and safe airflow ducts.