TCP 32413Q27K10 fluorescent Quad Tube - 13 Watt (875 Lumens) Soft White (2700K) 4-Pin (G24q-1 base) Quad Tube PL Lamp, 10-Pack Long Life, 10,000 hour average rated life Lower maintenance and labor costs for lamp replacements Lasts 7 years, based on 3 hours use a day Bulb lasts 10-13 times longer than similar incandescent bulbs Perfect for most commercial applications