Whirlwind is a weather-resistant, double-sided snap frame swing sign that is ideal for placing on pavements outside shops, cafes, etc. Sold in two parts, the base and frame are purchased separately and flat-pack for easy transportation. The frame is available in 4 sizes – A1, A0, B1 and B2 and the hollow plastic wheeled base holds 25l of water or sand for weighting and support. Spring pivot for swing motion of sign. Withstands winds of up to 13-18 mph/12-29kmh or Beaufort Scale 4. Recyclable. 1 year guarantee.