Philips Lighting 211391 T13.3 Metal Halide Lamp 39 Watt PGJ5 Base 3000 Lumens 91 CRI 3000K Warm White MasterColor CDM-TM 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 T3.5 bulb, 35W, Base: PGJ5, Rated Life (hours): 12000, Color Temp: 3000K, Luminous Flux (LM): 3000