Mounting system and method for artwork

A mounting system for artwork comprising:

• a blank of planar material comprising a rectangular main section having each of first and second opposite sides and third and fourth opposite sides, the main section adapted for carrying an artwork;
• and
• a plurality of separate extender tabs not part of the blank for attachment to respective opposite sides of the blank, each extender tab being longitudinal and having a plurality of parallel fold lines along its length to enable the extender tab to be folded into a three-dimensional perimeter member and fixed behind the main section of the blank,
• wherein on each of first and second opposite sides of the main section is integrally formed first and second longitudinal tabs, respectively, extending outwardly from said main section by a dimension W and having a plurality of parallel fold lines to enable the first and second tabs to be folded into a three dimensional perimeter member and fixed behind the main section of the blank, and
• wherein the plurality of separate extender tabs are arranged to be attached to the third and fourth opposite sides.