Smooth, black mat features a continuous core. The 4-ply museum quality board is made from 100% pure cotton pulp, featuring cotton fiber for extra strength and rigidity.
The best matboard for your framing project? Peterboro museum matboard, of course.
Mat board made of cotton – “rag” board – is multiple layers, or plies, of cotton board that have been color dyed and combined in 4-ply, or 8-ply versions.
Custom mats for frames aren't always needed, but they're always worth serious consideration.