Bonsai Boy's Grow Bulb Compact Fluorescent 32 Watt 150 Watt Equivalent Compact fluorescent daylight spectrum grow bulb. 32 watt / 150 watt equivalent. 6500k (kelvin rating) 120V. 1900 Lumens, 10,000 hours of life. Fits any standard fixture. Package dimensions 8" L x 3" W x 3" H.