Works on plexiglass are unframed with a simple fishing line hanging system through holes directly in the plexiglass. The work is painted in acrylic, UV protected & can hang directly in sunlit windows. Works tend to be 6 x 6 or 10 x10 inches. I will take commissions, work is priced reasonably at $25-60 per piece, depending on the size. Some of these pieces are located at Unicamp.