Very strong luminous flux of Divetta HW CFL destines them for using in a industrial and commercial spaces as is a factory buildings, big halls with high roof, sport halls etc. They are also suitable for outdoor lighting, especially for floodlighting of monuments or buildings. These lamps reach excellent color rendering index, the same as other Divetta fluorescent lamp, so they can be used in sophisticated lighting architecture. High frequency electronic ballast eliminates undesirable stroboscopic effect. You don't need any other components for installation, you can only screw up and switch on.