Westinghouse (LU70/S62/MED) Medium Base 70 Watt Clear ED17 1900K HID High Pressure Sodium Light Bulb provides efficiency and long life up to 24,000 average rated hours. These energy saving bulbs are commonly used in areas where long life is required and color rendering is not critical. For use in enclosed fixtures only, this medium base high pressure sodium light bulb requires ANSI ballast S62 for proper operation. This light bulb contains mercury. Dispose of bulb according to local, state or federal laws. Westinghouse is a trusted, global brand. Westinghouse knows lighting and offers products with exceptional quality, reliability and functionality. Product reference number 37435.