TCP Fluorescent Quad Tube PL Lamp, 13W (810 Lumens), Soft White (2700K) 2-Pin (GX23-2 base) Please NOTE: This lamps has a 2-Pin GX23-2 base Non Dimmable,For Whiter light lamp in the daylight should be ordered, not the warm white or soft white which has a yellow tint. Lifetime: 9.1 years Watts Used/Lumens: 13 Watt/800 Lumens Estimated Annual Energy Cost to Operate (based on 3 hrs/day): $1.57