... protection and Insulation class H.l No oily odors.l Low noise and libration. Features:l FENRZ Blower's Blade ... IP55 protection and Insulation class H.l No oily odors.l Low noise and libration.l Maintenance-free.l Easy installation. Model name ... used in environmental equipment, wastewater treatment, printing industry,bulb industry.Aquatic breeding, plastic welding, chemical industry, electroplating ...