Is it mat or matte for frame?
In the picture framing industry, a mat (or matte, or mount in British English) is a thin, flat piece of paper-based material included within a picture frame, which serves as additional decoration and to perform several other, more practical functions, such as separating the art from the glass.
Is it matt finish or matte finish?
A dull finish—as opposed to a shiny or glossy finish—on photos, paint or other surfaces is said to be matte.
How do you spell Matt for a picture?
A piece of decorative or conservation material (see matboard) used around artwork and often under glazing and a frame. Mat is the standard spelling used by MatShop. Also commonly spelled matte or, less often, matt.