Specifications Bulb Type: T8 48" LED tube Input Voltage: 120V 60Hz Power: 20W Beam Angle: 140 degrees Available Colors: White (5000-6000K), Neutral-White (4100-4500K), Warm-White (3100-3400K) Light Output (lumen): White 1950, Neutral-White 1900, Warm-White 1850 Diameter: 1-1/8" Length: 48" Note Ballast/starter of existing fixtures must be bypassed. Tombstones must be of the non-shunted type. Power is to be applied to one end of the tube only (labeled), 1 pin to Live/Hot and the other pin to Neutral; pins on the other end of the tube are for physically securing the tube only.