Sylvania 64450 MS400/BU-ONLY

Description

Sylvania 64450/64038 MS400-BU 400W Base-Up BT37 Metalarc Super Metal Halide Bulb Product Details (E-39) Mogul Screw-in Base  Color Temp 4000k Cool White Ansi Code M59/S Enclosed/Open Fixtures Only  MOL 8.31in x DIA 3.5in  Base-Up ± 15° Burn Positon Rated Avg. Life 20,000hrs  CRI 65    Additional Information The advanced arc tube design of Sylvania Metalarc Super  Metal halide lamps makes them superiorto standard metal halide probe start lamps. Initial lumen output levels are similar to standard lamps,but mean and maintained lumen levels can be up to 30 percent higher. these high performance lampsreduce color temperature shift over the life of the lamp by as much as 400K.Other performance enhancements include reaching 90 percent of full light output significantly earlierthan standard lamps reducing hot restrike time by up to 60 percent. 20,000 average rated life based on 10 hrs/start. 30,000 average rated life based on 120 hrs/start. S = When operated within 15 degrees of vertical, this lamp may be operated in an open luminaire provided the installation is not near people or flammable or combustible material, otherwise it must be operated in a suitably enclosed luminaire Lamps may be operated M155 or M135 pulse start ballast with a sustaining voltage greater than 270V Application• Ideal for Commercial Or Industrial Lighting.