10pcs 4 Foot LED Replacement Light Bulbs Description AWESOME Price on a BRAND NEW Box of 10 LED bulbs designed to replace fluorescent 4 foot tube lights after rewiring your fixtures. This LED is designed to fit all fluorescent light fixtures with the G13 double pin ends. Fits T8, T10 and T12 so there is no need to buy special sockets, just rewire yours by: Disconnecting the ballast. Only one end of the tube can be connected to input power of 110-277 volts AC. The other end of the tube must be connected to neutral. IMPORTANT: Only one end of the tube can be connected power and the other end connected to neutral. You CANNOT connect power and neutral to the same end. The LED's are configured for the highest efficiency so they are not dimmable and the cover over the LED's is clear for maximum light output. Each 4 foot long tube uses about 18 watts of power and produces about 1600LM. The blue color temperature is daylight white 6500K.