Light Source: Saturn Dimension: ª¦417xH525(16") ª¦547xH590(20") Protection Class: IP54 Weight: 6(16"),6.5(20")KG(Reference Only) Package Dimension: 480x480x535(16") 610x610x600(20") Material: High pressure die-casting Alu end cover, streamlined aluminum alloy electrical box, high pure aluminum anodizing reflector (wide and narrow light dimming design), and tempered glass cover (PC cover) Applicable Places: Industrial factory, Warehouses, Stadium, Hypermarkets and other indoor environments.