FML27 27 Watt Full Spectrum Compact Fluorescent Bulb 4 Pin - Daylight Natural Light (Not for Verilux Brand Lamps) First Quality 27 watt full spectrum replacement bulb fits lamps requiring a standard four pin FML27W bulb (see fitment exceptions below). Full Spectrum, Day light, Natural light bulb. 6400K Buy with confidence -- Money Back Warranty (See details in this listing) 6500K; CRI:82. Compare with America Floor Lamp, Visionmax, etc Ships From U.S.A.