1,Lamp: T5 14W*2 2,Gear: built-in pre-heat electronic ballast 3,Installation: recessed 4,Cut-out: 580* ... 280mm Model No: HFP6814E-2Lamp: T5 14W*2Gear: built-in pre-heat electronic ballastInstallation: recessed Cut-out: 580*280mmMaterial: high quality ... : aluminum HFP6814E-2: T5 2*14W economic troffer built-in pre-heat electronic ballast