This environmental friendly LED tube is for replacing traditional 24" fluorescent tubes, saving energy maintenance costs. Specifications Bulb Type: T8 24" LED tube Input Voltage: 120V 60Hz Power: 11W Beam Angle: 140 degrees Available Colors: White (5000-6000K), Neutral-White (4100-4500K), Warm-White (3100-3400K) Light Output (lumen): White 975, Neutral-White 950, Warm-White 925 Diameter: 1-1/8" Length: 24" Note Ballast/starter of existing fixture must be bypassed. Power is to be applied to both ends of the tube -- 1 end to Live/Hot and the other end to Neutral.