Core 2.0 DE Non-Dimmable Open Lighting Fixture,1000W, 277V-400V (lamp/cord not included)Core 2. 0 DE Non Dimmable Open Lighting System,1000W, 277V400V The Core 2. 0 DE Non Dimmable Open Lighting System is a commercial workhorse for large scale operators where reliability and performance are critical. Specifically designed for multi light array applications, the wide spread provides excellent uniformity. The open design effectively dissipates heat while maintaining ideal lamp operational temperature, which maximizes lamp output and