FLE10HT2/6H/CWCD, 10W, Cool White Color, Compact Fluorescent Spiral Bulb, Equivalent To 40W Incandescent, Lumens: 460, Maximum Length: 3.70. Medium Base. Ballast Is Designed With Instant On Feature Meaning That It Doesn't Require Any Warm Up Time Before The Lamp Is Lit, Energy Star Rated.