Thickened Fiberglass Insulated Flexible Duct

Thickened fiberglass insulated flexible duct is an upgraded heavy-duty HVAC ventilation duct with enhanced thermal insulation performance. Adopting thickened fiberglass insulation and double reinforced aluminum foil structure with steel wire support, this insulated flexible duct provides stronger condensation control and better sound attenuation than standard-grade ducts. Flexible and easy to install for complex indoor duct layouts, it is widely used in commercial central air conditioning systems, fresh air ventilation and fan coil duct connection scenarios requiring high-level thermal protection and stable air distribution.

Our Thickened Fiberglass Insulated Flexible Duct is specially designed for HVAC systems requiring enhanced thermal insulation, condensation control, and sound attenuation.

This product features an inner aluminum foil duct, thickened fiberglass insulation layer, reinforced outer aluminum foil jacket, and steel wire helix, offering improved insulation performance compared with the standard version. It is especially suitable for projects where better temperature retention and stronger anti-condensation capability are required.

The thickened version is widely used in central air conditioning systems, fresh air systems, commercial ventilation projects, and fan coil branch duct connections. Its flexible structure allows easy installation in limited ceiling spaces and complex duct layouts.

Key Features

  • Thickened fiberglass insulation for better thermal performance
  • Improved anti-condensation effect
  • Better noise reduction than standard version
  • Reinforced aluminum foil outer jacket
  • Flexible and easy to install
  • Suitable for higher standard HVAC insulation requirements
  • Ideal for supply air, return air, and fresh air systems
  • OEM / ODM customization available

Applications

  • Central air conditioning systems
  • Fresh air ventilation systems
  • Fan coil unit duct connections
  • Commercial HVAC insulation projects
  • Residential and office ventilation systems
  • Air duct systems requiring better thermal protection

Specifications

  • Product Name:Thickened Fiberglass Insulated Flexible Duct
  • Material:Aluminum Foil + Thickened Fiberglass Insulation + Steel Wire
  • Structure:Inner Aluminum Foil Layer + Thickened Fiberglass Insulation Layer + Reinforced Outer Aluminum Foil Layer + Steel Wire Helix
  • Temperature Range:-30°C to +60°C
  • Function:Enhanced Thermal Insulation / Anti-Condensation / Noise Reduction
  • Application:Central Air Conditioning / Fresh Air Systems / HVAC Ventilation

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