(1) 3mm acrylic pannel as the face                                                                                                                                                                (2) 3mm acrylic panel as the sides                                                                                                            (3) Letter thick 50mm(Determined by the size of the letter)                                                                                                                                                                    (4) SMD LED module in side as the light source                                                                                                                                                           (5)10mm PVC panel as the back plate