This gridwall sign holder accommodates 22" wide x 7" high signs. The gridwall sign holder has a metal mounting clip, that attaches to the top of your gridwall fixture without the use of any tools. Easily changed your signs via the slotted top edge of the frame, simply slide your old sign out and slide the new one in. This sign holder is perfect when you have a permanent sign to display or want to change your message often. Either way, it gives your gridwall fixture that last, finishing touch.