These are packaged bulk for commercial applications and sold in increments of 70 (1/2 pallet). The E-series Pro 1000e DE is the newest flagship model, now available in 277-347 volt. The E-series Pro 1000e DE Gavita comes with a Gavita Pro Plus 2,100 µmol, 1000 watt DE lamp. These fixture are equipped with what we call the Gavita repeater bus. The Gavita repeater bus solution allows you to daisy chain your controller cables from one fixture directly to the other. Each fixture has an input and an output, buffering the signal for the next fixture. This allows us to put 100 fixtures in one daisy chain. On each controller port you can connect 5 chains with 100 fixtures. The compact fixture contains a lamp, HR96 reflector or W 150 DE for wide configurations and horticultural quality ballast in one comprehensive package. The HR96 DE for overlapping configurations, assuring optimal uniformity and penetration. The W 150 DE for wide configurations, where uniformity and lower light levels are required in large rooms. 1 year warranty on the lamp. This professional fixture requires installation by a certified electrician in an industrial environment. Customer must select cord and mounting options.