What is another word for pass partouts?
Pronunciation: [pˈas pˈɑːta͡ʊts] (IPA) 
Pass partouts are used in the framing industry to secure artwork within a frame. They are also known as mat margins, mat borders, or mat windows. The purpose of a pass partout is to keep the artwork from touching the glass of the frame, thereby preventing damage or discoloration. They can be made from different materials such as paper, board, or cloth, and come in various colors and sizes to suit different framing needs. Other words associated with pass partouts include inner mats, cutouts, aperture mats, and border mats. These different synonyms for pass partouts all refer to the same function of separating the artwork from the frame's glass.
