Tip and Roll Sign Stanchions Control traffic and direct school visitors. Extremely useful to direct parking lot traffic or to add portable signage to any school entrance or event. The unique interchangeable message signs fit into the frame to give you the flexibility to display any message you need. Engineered for strength, the blow-molded plastic base and frame can be filled with sand or water for extra stability. Large wheels provide mobility on most surfaces and in all weather conditions. The overall height is 57in. with a sign area the measures 24in X 36in.