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FFU SPECIFICATION CLARIFICATION

FFU is consisted of controller, motor, impeller and casing. Firstly, the selection of casing material depends on the installed environment (corrosiveness).  Secondly, to achieve the best performance, the combination of motor and fan shall consider the desired air flow and the system pressure loss. In addition, the level of noise and vibration shall also be considered to avoid the impact to the production as well as operation personnel.