REMINDER - This lamp is NON-Dimmable,please DO NOT use with dimmers. - This Gen 2 LED PL bulb is much shorter than Gen 1 with same base dimension. CAN NOT fit some lighting fixtures with very narrow socket like horizontal desk lights, please check carefully before buying.New ConfigurationWe adopted our buyers' suggest, make this bulb Vertical and Horizontal combo, suitable for both wall-mounted and ceiling fixtures.Plug-and-PlayThis Gen 2 stick PL bulb is compatible with magnetic ballast, no need to rewire, just plug in and enjoy the lights. NOTE:Bypass operation maybe needed if the ballast can not work properly. Bypass operation could bring extra 10% energy saving which was highly recommended.Longer LifespanSilverlite LED bulb is rated at 50,000 hours. It is 5x longer than CFLs(10,000hours),meaning far fewer service cycles and far fewer replacement bulbs.5-year Limited WarrantySilverlite LED products are warranted to be free from defects in workmanship and material for 5 years. If it fails to do so, contact us with order ID to get a replacement.UL Listed for Damp LocationSilverlite LED PL bulb are UL approved. Suitable for damp locations where not in direct contact with water and weather.APPLICATIONS:Can be used for most CFL applications:downlights,sconces,recessed cans,ceiling fixtures,bathroom ventilation fans,not for desk lights.SPECIFICATIONS:- Power:5watt- Output:13watt CFL Equivalent- Voltage:120-277V- Brightness:500lumens- Color Temperature:Soft White(2700K)- CRI:80+- Operating Temperature:0°F to 104°F.