The redesigned heat dissipation feature means a cooler-running, longer -lasting lamp.
. 72W LED HID Replacement, 4K EX39, Type B BBP, 120-277V, Dimmable These lamps are dimmable, meet DLC 5. This is the lamp needed for the most difficult lighting situations-warehouses, gymnasiums, health clubs, factories, and arenas- and it succeeds with up to 25,000 lumens of LED-efficient light.