GE 45683 - 150 Watt - ED17 - PulseArc Multi-Vapor - Pulse Start - Metal Halide - Protected Arc Tube - 3500K - Medium Base - ANSI M102/O - Universal Burn - MXR150/U/MED/O HID Bulbs produce high output for their size making them a compact powerful &amp; efficient light source HID Bulbs are used for general lighting, professional lighting fixtures, growing applications HID bulbs put out around 3-5 times greater output (lumens per watt) than traditional halogen bulbs GE ED17 bulb, 150W, Base: E26 Medium Screw, Rated Life (hours): 15000, Color Temp: 3500K, Luminous Flux (LM):