... Luminous Letter / LED Sign letter / Advertising sign Used of shops, hotel, hospital, school. Waterproof, high quality Luminous Letter / LED Sign ... letter / Advertising sign Used of shops, hotel, hospital, school.Waterproof, high quality 1. Material: acrylic, ... boxes: 1.Material: super acrylic vacuum forming, 304# stainless steel or metal frame, led module inside2.logo: stick graphics ...