How thick is the plexiglass on your frames? Americanflat April 21, 2021 16:42 The plexiglass ranges from .8mm - 1mm in thickness. Related articles What are your frames made of? How thick of a photo can I fit in your picture frames? Can I create custom artwork for Americanflat to produce and ship to me? My frame or artwork arrived with damaged glass or plexiglass. Can I have only the glass or plexiglass replaced? Comments 0 comments Please sign in to leave a comment.