We stock Plexiglas (Acrylic) in .100 for picture frames, 1/8" & 1/4". It will scratch and does crack but it is considered stronger than glass and can be used as a safety glass in doors. It is commonly used in bird feeders, panes in a door, storm windows, picture frames, recessed tabletops, refrigerator shelves and signage. Obscure plexi is also available.
We also stock Lexan (Polycarbonate) in 1/8", 1/4" & 3/8". Lexan is much stronger and will not crack when drilled. Lexan is used in ATV windshields, truck caps and trailors.
They both come in 4' x 8' sheets and we will cut to fit your needs. To clean plexiglas or lexan, use a soft damp cloth and no harsh chemicals.