... ,top quality 4.Special size is ok 5.Long lifetime. Ultra Slim Led light box specification: (1) Normal Size: A4,A3, A2, A1 ... , T4/5 OR LED lighting source. Ultra slim, four side open.(4) Long life time 60000HOURS,3W-6W/light. Tianzhong brand Led light box, High ... side , double side· Customized : Customers designs, sizes & styles are welcome.· Led light box with CE marked.· 90% Uniformity. The degree of ...