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Philips 400-Watt HID High Pressure Sodium light bulbs offer premium light quality and energy efficiency
Ideal for use in parking lots, dusk-to-dawn fixtures, roadway lighting, and industrial and commercial applications
Medium Base
ED18 Shape
C400S51 for use on ANSI S51 ballast
Philips High-Intensity Discharge (HID) 400-Watt High Pressure Sodium ED18 light bulb offers unbeatable light quality and consistent performance. They are premium quality lights that can provide energy efficient lighting solutions for industrial applications, warehouses, post top applications and parking lots.