No Bolts, No Screws! - 42 inches high, constructed of 3/4' structural steel angle. powder-coated in your choice of white or black. Sign panels slide in. Main Panel Space - 22 x 24 inches. Can accommodate materials up to 1/4 inch in thickness. Rider Space - 6 x 24 inch special feature riders and name riders are held securely with our spring loaded clips. No hardware needed!