A lever lock is used for attaching first and second support elements in a display structure. The lever lock includes a body that attaches to a side of the first support element. A shaft extends from the body and is oriented to pass through the slot. A foot is disposed at an end of the shaft that is remote from the body and is configured to operatively engage a side of the second support element so as to provide a clamping force on the second support element against the first support element. A lever is coupled to the body and configured to rotate between first and second positions. A linkage connecting the lever with the shaft converts the rotation of the lever into a movement of the shaft through a translation and axial rotation so as to move the foot between engaging and disengaging positions.