... maintain Safe & Stable Features of the Electrostatic Kitchen Range Vent Hood: 1. Unique style structure, incorporating extraction functions ... for maintenance and cleaning. 6. Electrostatic Kitchen Range Vent Hood can use in large canteens,restaurants, hotels, ... supermarkets, shopping centers, etc. 7. Electrostatic Kitchen Range Vent Hood. Patented cylindrical honeycomb electric fields and optional PLC ...