... Blower is designed as per 110V/60HZ ,220V/50HZ ,used for swimming pools ,massage spas, fish farm. MINDER ... easily adjusted and also convenient for operation .It is used for swimming pools ,massage spas ,fish farms ,farm ... tank ,also used for air supply spare part of package ,glass products ... compact ,it is long service life . Sell MINDER "MVB" Series Vortex Blower