1,Lamp: T5 14W*3 2,Gear: built-in pre-heat electronic ballast 3,Installation: recessed 4,Cut-out: 580*580mm Model No: HFP6814E-3Lamp: T5 14W*3Gear: built-in pre-heat electronic ballastInstallation: recessed Cut-out: 580*580mmMaterial: high quality and intensity cold-rolled steel sheetLamp body: white plastic sprayingReflector: aluminum 580*580mm T5 14W*3 of economic troffer in China