Philips 157321 - CPO-T WHITE 140W/728 140 watt Metal Halide Light Bulb 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 Philips T6 bulb, 140W, Base: PGZ12, Rated Life (hours): 24000, Color Temp: , Luminous Flux (LM): 16500