Collection: Uncut Mat Boards and Collage Mats

Uncut mat boards are solid sheets of mat board with no window cut. Cut your own mats from them, use them as a backing board, or use them for crafts and signs. Each listing shows the board size and how many sheets you get.

You will also find our collage mat here, with a window for each photo. Want a mat with the window already cut? See our precut mats.