​Product Overview
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H-VAX Flexible Duct with Non-Compressed Polyester Insulation is a lightweight pre-insulated flexible duct system designed to provide effective thermal and acoustic insulation for H-VAX and ventilation applications.
The duct features a multi-layer structure consisting of an outer laminated aluminum layer, a non-compressed polyester fiber insulation layer, and an inner laminated aluminum layer reinforced with a high-strength steel spring wire helix. This construction provides excellent flexibility, moisture resistance, and reliable insulation performance while maintaining easy installation.
The non-compressed polyester insulation offers high resistance to moisture penetration and is an ideal solution for humid environments. It is odorless, non-toxic, and fiber-free, making it a safer alternative to traditional insulation materials.

• 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
• Effective thermal and acoustic insulation
• High resistance to moisture penetration
• Odorless, non-toxic, and fiber-free insulation
• Flexible design for easy installation
• Resistant to tearing and deformation
• Suitable for humid environments
• Low pressure loss for efficient airflow
• Slow-burning and self-extinguishing construction
• Lightweight and easy to handle

Key Features & Benefits

Installation

H-VAX Flexible Duct with Non-Compressed Polyester Insulation is designed for quick and efficient installation using standard H-VAX connectors, clamps, and sealing accessories. Its factory-insulated structure reduces installation time while providing reliable thermal performance and long-term durability.

Technical Specifications

Structure: Aluminum + Non-Compressed Polyester Insulation + Aluminum
Type: Flexible Insulated Duct
Available Sizes: 3" to 22"
Insulation Thickness: 15 mm
Insulation Material: Non-compressed Non-woven Polyester Fibers
Insulation Weight: 150 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
Pressure Drop: Minimum
Condensation Control: No condensation under recommended operating conditions
Physical Properties: Flexible, tear-resistant, and deformation-resistant
Fire Classification: Slow-burning and self-extinguishing materials
Packaging: 6 m per carton