Rag board
Description
An archival, stiff Paperboard, that is placed under or over a drawing, painting, or photograph to serve as a frame or provide a border between the picture and the frame. Mat boards are available in a variety of colors and surface finishes. Most mat boards are made from wood pulp, but archival quality Rag boards are also available.
Synonyms and Related Terms
ragmat; rag matboard; museum rag