TCP Fluorescent Triple Tube PL Lamp - 18 Watt (1150 Lumens) Soft White (2700K) 4-Pin (GX24q-2 base) Please NOTE: This lamps has a 2-Pin GX24q-2 base Non Dimmable Lifetime: 9.1 years Watts Used/Lumens: 18 Watt/1150 Lumens Estimated Annual Energy Cost to Operate (based on 3 hrs/day): $2.17