59-Watt 8 ft. Alto T8 Fluorescent Tube Light Bulb, Cool White (4100K)For your home and business's indoor light needs, consider using the 59 watt cool white ALTO Fluorescent Light Bulb (F96T8 TL841 PLUS). These bulbs cast a cool, white light that helps rooms feel cooler. Using 59 watts these bulbs output up to 5,490 lumens and can shine up to 30,000 hours. The fluorescent bulbs have a T8 shape with a medium base. Brightness: 5490 lumens Estimated yearly energy cost: $7. 11 (Based on 3 hrs day, 11c kWh. costs depend on