The Whirlwind is a heavy-duty single-sided wing sign for displaying indoor or
outdoor graphics. It has a wheeled, compact molded base that can be filled with
water or sand. The snap frame poster holders make changing the graphic quick and
easy. Spring-design flexes to withstand wind. Front loading snap frames
constructed from aluminum and powder coated steel. Padded base holds 7.5 gallons
of water. For use below 40 degrees Fahrenheit, use sand.