Advanced die-cast aluminum heat sink provides superior thermal transfer to extend lifespan of the luminaire. Fixture comes with an aluminum J-hook for suspension mounting. Light package contains high quality drivers and LED chips that are built for efficiency and longevity. Color tunable between 4000K cool white and 5000K daylight. See significant energy savings after replacing your metal halide fixture. Built in 6kV surge protection. The ProLED Select HoverBay Round Highbay offers the exciting combination of a sleek modern design and premium performance. Equipped with ProLED Select CCT Selectable technology, the HoverBay allows the user select between 4000K and 5000K color temperatures in the field. With ease of installation, application versatility and ProLED Select CCT selectable technology, the HoverBay is the ideal choice for retrofit and new build applications. Or Linear Fluorescent high bay fixture. Color temperature selectable: 4000K or 5000K. J-Hook for suspension mounting included. UL listed for wet locations. Rated for use in ambient temperatures up to 131°F. Dimmable by 0-10V standards.