Udisplay's inside dimensions are a generous 19 3/4" w x 17 1/2" h x 3" d.  The outside dimensions measure  21" w x 18-1/2" h x 4-5/8" d.  and weighs aprox. 10 lbs.  Although Udisplay can be manufactured in various sizes, the current dimensions provide for the optimal proportional space for the vast majority of almost all collectible items.  Larger items such as footballs, swords, jerseys etc.. make up only a minute segment of the collectibles market.  Provision of those larger type items will be considered in the future.