Round Spiral Duct for HVAC Duct Systems
2021-9-28u2002·u2002Spiral Round Duct. Spiral round lock-seam duct is the most efficient way to transport air in HVAC systems. The round profile greater flow efficiencies than rectangular ducts. Because round ducts are inherently stronger than rectangular profiles, they can be lighter metal gauges and can be installed in longer spans.
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