Aluminium Polished Fire Retardant Uninsulated Flexible Duct

Fire Retardant Uninsulated Flexible Duct (MKF-UFD#30)
The MKFlex Fire Retardant Uninsulated Flexible Duct offers exceptional and unmatched fire resistance. It is constructed from multi-layer fire-retardant composite materials and is tested to achieve a Class 'O' fire rating.

Compliance
The duct is specially designed and manufactured in accordance with the following international standards and regulations:

• ASTM E-84

• NFPA 90 A & 90 B

• UL 181

• ASHRAE 90.1

Specifications

• Temperature Range: -26 °C to 150 °C

• Maximum Velocity: 5000 FPM

• Maximum Positive Pressure:
   • 4″ to 16″ Dia. → 10″ w.g.
   • 18″ to 20″ Dia. → 6″ w.g.

• Maximum Negative Pressure: 0.8″ w.g. (all diameters)

• Fire Rating: Class 'O' as per UL-723

• Available Diameters: 3″, 4″, 5″, 6″, 8″, 10″, 12″, 14″, 16″, 18″, 20″

Advantages

• Vapour barrier prevents condensation on the duct surface

• Emits no toxic or hazardous gases in case of fire

• Easy and quick to install

• High fire retardant performance for added safety