Large 8.5" 45W Energy Efficient Compact Fluorescent Light Bulb LARGE light bulb over 8.5" to light up any dark room. EMITS OUTSTANDING warm white and equivalent to 150watt incandescent in brightness/luminosity. COST EFFECTIVE - 1 of these light bulbs is equivalent to ten 200W light bulbs. Which means more money in your pocket! MULTIPLE USES - Use this light bulb for photography, light the garage or a large space that needs extra light