HID Bulb, Bulb Base Type Mogul Screw (E39), Bulb Dia. 2 15/16 in, Bulb Housing Glass, Bulb Shape ED23-1/2, Color Rendering Index 17, Color Temperature 2100K, Lumens 16,000 lm, Light Technology High Pressure Sodium, Overall Length 7 3/4 in, Shatter-Resistant No, Voltage 62V, Watts 150 W, Bulb Beam Angle 360 Degrees , Bulb Finish Clear, Rated Life 24,000 hr, ANSI Code S55, Dimmable No, For Enclosed Fixtures Yes, Bulb Operating Position Universal Burning, Indoor/Outdoor Usage Indoor/Outdoor These HID and LED HID-replacement light bulbs have a mogul screw base, also called an E39 base. The E39 base has a 39mm diameter and screws into standard E39 sockets, which are typically found on enclosed fixtures. E39 mogul screw-base HID and LED HID-replacement bulbs produce a lot of light and are common.