Abstract: A display frame includes a backing sheet having a spacer secured thereto and a mat overlying and secured to the spacer. The mat has a window defined by four edges, this mat window being smaller in each direction than a window in the spacer. The edges of the mat window meet in corners. Slits begin at each of two adjacent corners of the mat window and proceed away from opposite ends of one edge of the mat window. These slits have closed ends remote from the ends of that edge and are of a length sufficient to permit an image to be inserted within the frame, this image having dimensions greater than those of the frame window but no greater than those of the spacer window, by raising opposite edges of the frame window adjacent the slits and inserting the image beneath the raised edges, moving the image in one direction until a trailing edge of the image clears that one edge of the mat window, and then moving the image in the opposite direction to move its trailing edge beneath the one edge of the mat window.