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Traditional systems rely on above-ceiling installation of ductwork and large distribution units.
You want to avoid having ductwork running through high traffic areas or in areas where it may affect the safe operation of power tools.
As dirt accumulated on fan blades or within ductwork , it reduced the possible airflow through the system.
Partitions, false ceilings, lighting, heating and ventilation ductwork , computer systems, telecommunications, and security apparatus are vulnerable.
This reduction in airflow rate translates into ductwork and fans being about 20 percent smaller than a conventional system, with proportional construction cost savings.
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