<https://www.signs101.com/threads/indoor-light-box-supplier.150386/>
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"I need to find a supplier that sells 4'x4' LED light box that I can hang in a window. It can either be a snap frame or slide in type. A customer of mine wants to hang it and just plug it in the socket. \n\nI know of a place but the largest they go..."
<https://www.signs101.com/threads/indoor-light-box-supplier.150386/>