Double Aluminum Insulated Flexible Air Ducting Hose

The Two Layer Alu Foiled Insulated Flexible Air Ducting Hose from GFIHVAC is designed for efficient airflow, excellent insulation, and long-lasting performance in HVAC systems.

It combines a double-layer aluminum foil inner duct, fiberglass wool insulation, and a black PVC jacket to ensure durability, flexibility, and stable thermal performance for both residential and commercial ventilation projects.

• Inner Duct: Double-layer aluminum foil reinforced with a high-elasticity steel wire spiral, providing smooth airflow and strong mechanical support.
• Insulation Layer: 25–30 mm thick fiberglass (glass wool) effectively reduces heat transfer and prevents condensation.
• Outer Jacket: Black PVC sleeve offering external protection against abrasion, impact, and moisture.

This multi-layer construction delivers superior thermal insulation and minimizes air leakage throughout the ducting system.

Key Features

• Excellent Insulation: Fiberglass layer maintains temperature stability and prevents energy loss.
• Durable Inner Core: Double aluminum foil improves corrosion resistance and ensures airtight airflow.
• Protective PVC Jacket: Resistant to aging, moisture, and external damage for longer service life.
• High Flexibility: Easily bends around obstacles without deformation—ideal for limited spaces.
• Space-Efficient Design: Compression ratio up to 10:1 for convenient storage and transport.
• Easy Installation: No special tools required; simple cutting and secure connection with clamps or tapes.

• Double-Layer vs. Single-Layer Alu Foiled Flexible Ducting Hose

• In insulated flexible air ducting hose construction, both single-layer and double-layer aluminum foiled inner ducts are commonly used, each with its own advantages depending on the application needs.
  • Double-layer aluminum foil offers added structural strength and enhanced resistance to tearing or deformation. It is often chosen for projects requiring extra durability or air pressure stability.
  • Single-layer aluminum foil provides a lightweight and flexible solution, making it easier to install in tight or complex duct layouts. It’s also a practical option where standard thermal performance is sufficient.

  Both types are widely used in HVAC systems, and the selection depends on factors such as installation environment, airflow demands, and project budget. GFIHVAC offers both configurations to ensure the right balance of flexibility, performance, and cost-efficiency for every ventilation system.

• Technical Specifications

• Item	Specification
  Outer Sleeve	Black PVC Jacket
  Insulation Material	Fiberglass (Glass Wool) ,Thickness: 25mm / 30mm
  Inner Duct	Double-Layer Aluminum
  Fiberglass Density	12kg/m3,16kg/m3,20kg/m3,24kg/m3,32kg/m3,
  Polyester Density (option)	Thickness: 25mm / 30mm, 100–750 g/m³
  Thermal Resistance	R4.2, R6, R8 (optional insulation thickness, high R-value colors is pink)
  Maximum Air Velocity	30 m/s
  Working Pressure	Up to 3000 Pa
  Available Diameter	50mm–650mm (2″–25″)
  Temperature Range	-30°C to +150°C
  Steel Wire Diameter	0.6–2.5 mm (carbon steel spiral)
  Standard Length	10 m (customizable upon request)
  Ease of Cutting	No special tools required; easy to connect
  Fire & Pressure Testing	Passed fire resistance and pressure tests
  Flexibility	Can be bent in any direction (small bending radius)
  Space Saving	Compression ratio of 10:1
  Installation	Easy installation; long service life

• How to Connect Two Insulated Flexible Air Duct Together

To extend duct length or join segments:

• Prepare the ends: Cut each duct section cleanly and ensure insulation is evenly trimmed back to expose the inner core.
• Insert a rigid metal sleeve or coupler between the inner aluminum cores of both ducts.
• Seal the joint using UL 181-approved aluminum tape around the inner core for airtightness.
• Slide insulation and jacket back over the joint and secure with clamps or zip ties.
• Tape or wrap the outer layer (PVC jacket) with aluminum or duct wrap to ensure a tight and durable seal.
• Proper sealing prevents air leaks, condensation, and performance loss across the HVAC system.

• Contact Us

• Looking for a dependable, energy-efficient insulated flexible air ducting hose for your HVAC installation?

  GFIHVAC offers quality-built flexible air ducting in multiple sizes and insulation options, with support for bulk orders and international delivery.

  📩 Contact our team today for pricing, samples, or technical documentation tailored to your project needs.