The portion of an inner (or bottom) mat that's visible beneath the top mat, usually 1/8 to 1/4 inch, adding color and depth to the presentation.
Definition: The mat reveal refers to the visible portion of an inner (or bottom) mat that peeks out beneath the top mat. Typically ranging from 1/8" to 1/4", the reveal adds a subtle color border and visual depth to the framed artwork, enhancing its overall presentation.
