Definition: Outside frame size refers to the overall width and height of a picture frame measured along its external edges. This measurement determines the total space the frame will occupy on a wall and is important for planning display and ensuring compatibility with existing decor.
The outside frame size differs from the artwork or mat opening size, which measures the area visible within the frame. The outside dimensions include the width of the frame moulding itself, any stacked liners, and other decorative elements. Accurate measurement is critical for proper framing, shipping, and wall placement.