Rag board
Description
A cotton-based Mat board, 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. Rag boards are available in a variety of colors and surface finishes. Most rag mat boards are made with a cotton core and backing with acid-neutralized facing. An archival quality board made of 100% cotton is generally specified as 'museum rag'.
Synonyms and Related Terms
ragmat; rag matboard