... , school. Waterproof, high quality Luminous Letter / LED Sign letter / Advertising sign Used of shops, hotel, hospital, school.Waterproof, high ... and indoor For light boxes:1.Material: super acrylic vacuum forming, 304# stainless steel or metal frame, led ... frame and high transparent epoxyMetal frame, acrylic and plastic trimSpecificVery detailed, delicacyNormal looking, rough on edgeMin.thickness20mm ...