... .5A Frequency 50Hz/60Hz Fan Type axial flow Motor Type 3-phrase,2-speed Usable Area 150- ... resistant, UV-cut. Can fit with dust filter. Motor:iron casting,durable, anti-oxidant, fast heat dissipation, ... long using life. Aluminum sealed motor: 3-phase, 2-speed; self-cooling type, high efficient ... the pirce is a little higher. plastic axial evaporative air cooler, 30000CMH