this sidewalk posters holder comes with double sided snap frame. the use of this aluminum frame is easy to load or change a graphic simply snap open the four spring-loaded frame edges, remove the anti-glare transparent cover and place graphic, picture, p, posters and or artwork as required, then snap close the frame edges. the anti-glare cover allows a clear view of the print and protects the artwork from dust and direct light. heavy-duty double-sided wind stand for displaying indoor or outdoor graphics. the unit has a wheeled, compact molded base that can be filled with water or sand..syi