25-Watt 3 ft. Linear T8 Fluorescent Light Bulb Cool White (4100K) Alto II (30-Pack)Philips linear fluorescent 17 Watt 2 ft. T8 cool white light bulb (F25T8 TL841) is ideal for residential use in garages workshops and basements, as well as for commercial use in general, decorative and architectural lighting. It provides a cool white light. Brightness: 2150 lumens Estimated yearly energy cost: $3. 01 (based on 3 hrs day, 11c kWh. costs depend on rates and use) Life: 21. 9 years (based on 3 hrs day) Light appearance: 4100K (Cool White)