... 1410r/m, IP55, class F, efficiency 90%, top/foot mounted, certification, CCC.(motor can be supplied as demand)Motor bearing ... assistant by computers, which maximizes the effectiveness of the fan. Ten strict procedures that consist of airflow test, noise ... ≤643801000x1000x450175USDZRP-13801270(50in)50≥1400480001500≤643801380x1380x450235USD ZR series wall-mounted push-pull centrifugal ventilating fan