​Product Overview
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H-VAX Flexible Duct with Compressed Polyester Insulation is a high-performance pre-insulated flexible duct designed to provide excellent thermal and acoustic insulation for H-VAX and ventilation systems.
The duct features a multi-layer construction consisting of an outer laminated aluminum layer, a compressed polyester insulation core, and an inner laminated aluminum layer reinforced with a high-strength steel spring wire helix. This integrated design ensures efficient thermal performance, reduced noise transmission, and excellent flexibility for easy installation.
Its high resistance to moisture penetration makes it particularly suitable for humid environments. Unlike conventional fiberglass insulation, compressed polyester insulation is odorless, non-toxic, and fiber-free, providing a cleaner and safer solution for modern H-VAX applications.

• Heating and cooling systems
• Air conditioning systems
• Ventilation systems
• Exhaust and chimney systems
• Residential buildings
• Commercial buildings
• Hotels and hospitality facilities
• Hospitals and healthcare facilities
• Industrial H-VAX systems
• Low- and medium-pressure air distribution systems

Applications​​​​​​​

• Factory-insulated flexible duct construction
• Excellent thermal and acoustic insulation
• High resistance to moisture penetration
• Odorless, non-toxic, and fiber-free insulation
• Lightweight and flexible for easy installation
• Resistant to tearing and deformation
• Low pressure loss for efficient airflow
• Suitable for humid environments
• Slow-burning and self-extinguishing materials
• Long-lasting performance with minimal maintenance

Key Features & Benefits

Technical Specifications

Structure: Aluminum + Compressed Polyester Insulation + Aluminum
Type: Flexible Insulated Duct
Available Sizes: 3" to 22"
Insulation Thickness: 2 mm
Insulation Weight: 300 g/m²
Thermal Conductivity: 0.034 W/m·K at 10°C
Operating Temperature: -20°C to +110°C
Air Flow Velocity: 25–35 m/s
Maximum Operating Pressure: 3000 Pa