With our magnetic LED strips you can get rid of all the fluorescent hardware in a 2x4 ceiling troffer: the ballast, ballast housing, and sockets, and simply magnetically attach the LED strips and driver in the fixture and connect to AC. With efficiency of 150 lumens per watt, 3 x 18w strips replace 3 x 32w fluorescent tubes & ballasts to reduce energy 45% and improve brightness and appearance.