Lithonia Lighting SBL4 LP835 LED Surface Wraparound, 3500K, 4', White Super Bright Lights - LEDs provide over 100 lumens per watt with a total of 4,540 Lumens Reduces Re-lamp frequence: LEDS maintain 90% of ouput for at least 60,000 hours (20 years with 8 hours/day 365 days/year) Saves Money - LEDs can save 45% off energy bill versus a T12 Flourescent version Simple Appearance makes it ideal for hallways, closets, stairwells, kitchens, offices, garages and replacing flourescent versions Meets Safety Standard for CSA in USA, Canada, IESNA LM-79 and Damp locations