SUPER BRIGHT: Each led high bay light offers 30000 lumens of brighter lighting while using only 200 watts of power. Means you'll cut electricity costs while having the bright lighting for your space. It's high output light definitely make these useful for large spaces and high ceilings. INDUSTRIAL GRADE: The LED High Bay Lighting Fixture built with IP65 waterproof aluminium housing .With the unique shape of hollowed out and curved edges, good heat dissipation greatly improve cooling efficiency to withstand extreme usage environments. EASY TO INSTALL: These led shop lights are designed to work with USA standard 110-120 volt three-wire circuits. Just plug them in a wall switch and them come on.