High bay lights are used in areas with a large ceiling height, typically over 20ft, to illuminate large areas such as warehouses, industrial facilities, factories, gymnasiums or hangars. High bay fixtures hang from the ceiling via hooks, chains or pendants, or can be directly fixed to the ceiling. The powerful light given off from these fixtures is perfect to cover vast horizontal and vertical spaces. LED technology increases the efficiency due to the long lifespan of the diode, which in turn reduces the maintenance and up-keep of the light. Alongside this, LED high bays provide improved lighting quality versus high-pressure sodium and fluorescent counterparts.