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Yes, fabric duct manufacturers need the maximum and minimum airflow settings and static pressure available to the fabric duct (typically a 50% turn down recommended for round ducts). D shape (half round) ducts are perfect for Variable Air Volume Systems because they retain their shape even when the system is off. Click Here to learn about shapes and how to install of fabric ducts, textile ducts or air socks for air distribution or ventilation sytem. |
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