SYLVANIA 64705 - 400 Watt - BT37 - Metal Halide Protected Arc Tube - 3600K - ANSI M59/O - Mogul Base (EX39) - Base Up Burn - MP400/BU-ONLY GROU provides a light output of

provides a light output of 2050 lumens at a Color Rendering Index (CRI) of 62 and can last an average of 8000 hours

Energy Used: 40 Watts

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

showcase displays and most common residential and commercial lighting needs

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

SYLVANIA 64705 - 400 Watt - BT37 - Metal Halide Protected Arc Tube - 3600K - ANSI M59/O - Mogul Base (EX39) - Base Up Burn - MP400/BU-ONLY GROU provides a light output ofThe 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.