Product Catalog » SURFACES » Peterboro Mat Boards, Illustration Boards , Museum Board , Design Suede Board and Other Boards » Peterboro “Regular” Mat Board Peterboro “Regular” Mat Board $0.00 Peterboro “Regular” Mat Board regular core matboard is 100% acid free all parts buffered to a ph of 8.2,+/-5, including the face paper available in wide range of colours size : 32” x 40”