A little off topic but I thought those that frequent this forum may have a better idea. A client of mine was telling me about a 'frame' they saw that was only two pieces of glass with the print 'sandwiched' between them. There were four metal studs or something in the corners holding the two pieces together, but they didn't know how it was hung.
Has anyone seen this or know of a supplier? It sounds interesting as the glass is larger than the print, so the wall colour becomes the mat.