The inner dimensions of the frame are 23" x 20". The outlines of the squares, and the border designs, are painted on the underside of the glass ("reverse painted on glass.") Family snapshots are placed in cut-out frames on alternate squares and in the corners. Imagine the intimate setting in which checkers or chess would be played by family members. A wonderful folk art object, it also reminds me of the array of photographs in Walker Evans' photograph of the studio window.