SYLVANIA 64705 - 400 Watt - BT37 - Metal Halide Protected Arc Tube - 3600K - ANSI M59/O - Mogul Base (EX39) - Base Up Burn - MP400/BU-ONLY GROU medium base bulb offers 4200

medium base bulb offers 4200 lumens of light output and has an average rated life of 8

Soft white color temperature of 3200K that is fully dimmable makes it easy to set the mood with your decorative lighting fixtures

600-Watt Incandescent Equivalent

Philips 37371-2 - 150 Watt - T7 Unprotected Arc Tube - 4200K - Rx7s Base - ANSI M142/E - Horizontal Burn - CDM150/TD/942

SYLVANIA 64705 - 400 Watt - BT37 - Metal Halide Protected Arc Tube - 3600K - ANSI M59/O - Mogul Base (EX39) - Base Up Burn - MP400/BU-ONLY GROU medium base bulb offers 4200The METALARC PRO TECH metal halide lamps were created to fill the need for a safe light source for applications where a protective lens on the metal halide fixture was either impractical or detrimental to fixture design. Please note that metal halide lamps cannot be operated without a ballast.