... panal lighting. 4.Life Span: 50, 000 hours. 5.3 years warranty. Specification of LED Crystal light box Item ... from the light box to the transformer, 4.9 feet/ 150cm from the adapter to plugOperating Temperature-4 ... saving compared with traditional T8 tube light box.3. 5 times life span(6 years) than commom T8 ... box, master paper box, plywood case3. One 20 feet container can load 3500 pcs A4, 2000 pcs A3, ...