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Delta Duct FD3 – Insulated Flexible Duct

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Applications: Residential & Light Commercial HVAC, General Exhaust Systems. Key Features: Double-layer Clear Polyester Core, Quality Fiber Glass Insulation. Compliance: Flame Retardant Bonding, High Compressibility for Tight Spaces.

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The Delta Duct FD3 is a high-strength, fully flexible air duct designed for versatility in modern air conditioning and ventilation systems. It features a multi-layer construction consisting of an outer jacket of metalized PET laminated over clear polyester and an inner core made of a double layer of clear polyester. The core is permanently bonded with flame-retardant adhesive and reinforced with a coated steel spring helix to ensure dimensional stability.

Real-World Applications

  • Residential HVAC: Ideal for connecting supply air outlets to main trunks in apartments and private villas.

  • Office Fit-outs: Used to route air through suspended ceilings where rigid ducting would be difficult to maneuver.

  • Light Commercial Ventilation: Suitable for bathroom and general exhaust systems in retail and office environments.

Specification: (from product catalog)

  • Diameter: 4″ to 20″

  • Inner Core: Double layer clear polyester

  • Outer Jacket: Metalized PET laminated over clear polyester

  • Insulation Density: 16, 24, or 32 $kg/m^3$

  • Max Velocity: 5000 FPM (25.5 m/s)

  • Max Positive Pressure: 10″ W.C. (2.5 KPa)

  • Insulation R-Value: 4.2 or 6 ($F-hr/BTU$)

Authorized Distribution in Sri Lanka

Incube Holding Sri Lanka is the primary sales and distribution agent for Delta Duct air conditioning solutions and HAPRI building insulation products. We provide direct access to these high-quality enterprise building materials, specializing in Thermal and Acoustic Insulation Solutions across Sri Lanka.

For reliable, durable, and international-standard air distribution systems, trust the partnership between Delta Duct and Incube Holding.

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