This listing includes 4000K and 6000K milky and clear cover, with packaging options of 4, 10, or 20 units available. Specification: LED Tube Type: Type B Input Voltage: AC 85-277V Rated Power: 22W (65W Equivalent) Color Temp: 4000K, 6000K Super Bright Lumen(lm): 2400LM Beam Angle: 180° Base Type: G13 Bi-Pin Installation Way: Ballast Bypass Powered Way: Dual Ended Power Operated Temp: -20℃ to 50 ℃ Lens Type: Clear Dimmable: No Waterproof: No Length: 4 Foot Package: 4, 10, 20 Pack Caution: 1. Turn off the power supply before installation. 2. Ballast bypass and dual end installation. 3. Do not use this tube with dimmers. 4. Installing the wrong type of LED tube can result in premature failures and potentially dangerous short-circuits and fire hazards, please check the specs clearly before purchasing and installation.