How thick is the plexiglass on your frames? Americanflat Administrator April 21, 2021 16:42 The plexiglass ranges from .8mm - 1mm in thickness. Related articles What are your frames made of? Does my frame come with hanging hardware? How thick of a photo can I fit in your picture frames? Are the mats in your picture frames removable? Where are your products manufactured? Comments 0 comments Please sign in to leave a comment.