This Satco 400-watt HID metal halide bulb provides powerful, efficient illumination for commercial, industrial, and outdoor lighting applications. With an ED37 lamp shape and E39 mogul base, it delivers 36,000 lumens of uniform 4000K cool white light with an average rated life of 15,000 hours.

• 400 watts with 36,000 lumens output
• ED37 lamp shape, E39 mogul base
• 4000K Cool White color temperature
• Average rated life: 15,000 hours
• CRI: 65 for good color rendering
• Maximum overall length: 11.5", maximum outer diameter: 4.63"
• Universal burning position for flexible installation
• Clear finish
• 1 bulb per box