The 400W Digilux Metal Halide generates an amazing 45,000 lumens. 

400W Digilux Metal Halide bulbs provide an increase of 25% more energy in the red and orange spectrums for a more complete light spectrum.

Digilux bulbs are designed specifically to be used with your digital ballasts. They are hot start approved and work well in both vertical and horizontal light fixtures.

C.A.P. Digilux bulbs are favored by growers because of the wide color spectrum and efficiency. They feature better color uniformity, longer bulb life, and less lumen depreciation.

For anyone running a 400 watt light, this bulb will make your plants exhibit more compact vegetative growth.

The packaging for the 400W Digilux Metal Halide is incredible, with a contoured bulb tray and a "hologram of authenticity" for each bulb.

Comes in case of 6. Carefully packed to prevent breakage during shipping.

More info (PDF format)