Amazon.com - ZXT-parts 6x6 Picture Frame With Mat 4x4 Picture. Brown. 2 Panels (1 Glass, 1 Plexiglass). Solid Wood Frames. Picture Frames Square on The Table Top, Hang on The Wall.
1mm Acrylic Sheet - Etsy
Fielect Black Acrylic Sheet 8.19" x 5.77" x 0.08" Cast Plexiglass A5 Black Plexiglass Sheet Acrylic Sheet Plastic Plexiglass Sheet Board for Picture Frames Sign Holders: Amazon.com: Industrial & Scientific