Sunlite 87922 LED T8 Plug & Play Light Tube (Type A) 4 ft, 12 Watt (32W Equivalent) 1800 Lumens, Medium G13 Bi Pin Base, Dual End Connection, Electronic Ballast Compatible, 4000K Cool White, 25 Pack FIXTUR This 5000K natural daylight light ETL Listed This 5000K natural daylight light produces 4000 lumens using just 38 watts up to 87% less energy than an equivalent 300 watt incandescent light bulb Each fixture is 11 inches in diameter and 3 They are instant on at full brightness with no buzzing or flickering PLUG AND PLAY – These bulbs are direct replacements for T8 T12 medium 2 pin base (G13) fluorescent tubes with no bypass required