Philips 327817 35-watt T15 SOX35 Low Pressure Sodium HID Light Bulb
Philips High-Intensity Discharge (HID) 35-watt Low Pressure Sodium SOX T15 light bulb offers high energy efficiency for indoor and outdoor applications. They are vibration resistant and are ideal for roadways, bridges and tunnels, security lighting, area flood lighting, railway crossings and airport lighting.
