Circular High Bay 100 Watts with Surge Protection, On/Off 120~277 VAC Input, 80 CRI & 5000K, with 0-10 resistant dimming included, standard model comes with hook mount. Designed to replace, and outlast, traditional 250W HID fixtures, the Horner Circular High Bay CHB100 watt offers versatility, enhanced illumination, and profitable ROI.