... A3,A4 Thanks for Visiting!Advertising Light BOX with LED Display ProductLED Crystal Light Box,advertising light box Materialacrylic panels ... ,5-8mm light guide panel(LGP),LED light,reflective film etcShaperound,square,irregular design shapeSizeA1, A2, A3, A4, ... or engraving on the LGP or engraving the individual design on the faceplateApplicationWidely used in business center ,indoor decoration ...