BULBAMERICA HTI 150w replacement for HTI 150 metal halide Lamp 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 Bulbamerica bulb, 150W, Base: GY9.5 2-Pin Prefocus, Rated Life (hours): 750, Color Temp: 6500K, Luminous Flux (LM): 9500