Insulated Flexible Duct
FloDuct insulated flexible duct is made of a flexible aluminum inner core covered with a layer of thermal insulation, such as fiberglass or glass wool, and protected by an outer jacket of aluminum foil. The insulation helps maintain air temperature, reduce energy loss, and minimize noise as air moves through the duct. Insulated flexible ducts are commonly used in heating, ventilation, and air conditioning systems to improve efficiency and comfort, especially in spaces where ducts pass through unconditioned areas.
INCO-FDI4
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Insulated Flexible Ducts Multi Laminated Aluminum Foil and Polyester Film

FloDuct insulated flexible duct is made of a flexible aluminum inner core covered with a layer of thermal insulation, such as fiberglass or glass wool, and protected by an outer jacket of aluminum foil. The insulation helps maintain air temperature, reduce energy loss, and minimize noise as air moves through the duct. Insulated flexible ducts are commonly used in heating, ventilation, and air conditioning systems to improve efficiency and comfort, especially in spaces where ducts pass through unconditioned areas.

INCO-FDI4

Standard Specifications
Inner Core Multi-laminated aluminum foil & polyester film, permanently bonded to a corrosion-resistant steel wire helix, with a thick polyester fiber insulation blanket for enhanced durability and thermal performance.
Outer Core Strong vapour barrier made from multilayer aluminum film combined with strong fiberglass reinforced scrim
Insulation Thickness 1", 1 1/2", 2" (25mm, 38mm, 50mm)
Density of Insulation 1 lb/ft3, 1.5 lb/ft3 (16kg/m3, 24kg/m3)
R Value 0.23 ft2·°F·hr/Btu (4.2 m2 K/W)
Maximum Positive Pressure 12 in. w.g. (3,000 Pa)
Maximum Negative Pressure 0.5 in. w.g. (125 pa)
Maximum Velocity 5,000 fpm (25 m/s)
Operating Temperature -22 °F to 302 °F (-30 °C to +150 °C)
Standard Length 25ft and 33ft (8m and 10m)
Diameter 4" to 20" (100mm to 500mm)
Fire Performance Class A (ASTM E84), Class O (BS 476 part 6 and 7)
Warranty 10 Years
  • It is a non-insulated aluminum flexible air duct specifically produced for low and medium pressure ventilation and air conditioning systems.
  • It is produced from multi-layer aluminium and polyester, strengthened with high tension hard steel spring wire.
  • Its dimensions, tolerances and mechanical resistance are tested, classified & certified according to EN 13180 standard.
  • Floduct Uninsulated  flexible air ducts are airtight.
  • It has high elasticity and flexibility. It can be easily fitted to circular, oval or rectangular connectors.
  1. Suitable for low and medium pressure ventilation and air conditioning systems
  2. Non-insulated.
  3. Aluminium inner and outer face
  4. M0 certified according to France national reaction to fire standard
  5. Class A2 certified according to European reaction to fire standard.
  6. Higher negative pressure durability compared to standard product.
  7. Smaller sag compared to standard product.
  8. Lower pressure loss compared to standard product
  9. Lower bending loss coefficient compared to standard product.
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Installation and Application