Spiral Flat-Oval Ducting
Spiral Flat-Oval Duct is an innovative ductwork solution specifically engineered for applications where space is limited—such as underfloor systems, ceiling voids, and other low headroom environments. Its shape combines the aerodynamic benefits of round ductwork with a low-profile design, making it ideal for projects that require maximum airflow in minimal space.
Design & Construction
The spiral flat-oval duct is manufactured by reshaping standard round spiral ducting into an oval form, where the long sides are stretched taut and remain perfectly flat. This method preserves the structural integrity and smooth internal surface of round ductwork while reducing the overall height or depth needed for installation.
Key Advantages
- Lightweight Spiral-Reinforced Walls: Ensures strength while minimizing weight for easier handling and installation.
- Smooth Streamlined Interior: Reduces air friction and eliminates turbulence, improving energy efficiency and system performance.
- Long Continuous Lengths: Manufactured in extended sections (up to 12 feet), minimizing the number of joints and potential leakage points.
- Simple Joining Techniques: Fast and secure installation using slip joints or flanged connections.
- Consistent, Matched Fittings: Uniform sizing ensures a seamless fit between duct sections and fittings.
- Space-Efficient Profile: The flat-oval shape allows installation in locations where round ducts won’t fit, optimizing available space.
Specifications
- Thickness:
- Range: 0.60 mm (24 Gauge) to 1.00 mm (20 Gauge)
- As per SMACNA “HVAC Duct Construction Standards” – 1985
- Duct Thickness by Size:
Major Axis (Width "B") Spiral Duct Thickness Duct Fittings Thickness Up to 24" 24G (0.63 mm) 20G (1.00 mm) 25" to 36" 22G (0.80 mm) 20G (1.00 mm) 37" to 48" 22G (0.80 mm) 18G (1.25 mm) 49" to 70" 20G (1.00 mm) 18G (1.25 mm) - Standard Lengths: 4 ft, 8 ft, 10 ft, and 12 ft sections
- Available Materials:
- Galvanized Steel
- Aluminum
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Surface Options:
- Plain
- Corrugated (Enhances radial rigidity by up to 300%)
