Water Base Pavement Sign has a hollow base which can be filled with water provide strength and stability for your outdoor signage. Your signs are attached to the base by heavy duty springs which prevent the pavement sign from falling over in strong winds. The sign is fitted to a snap frame mechanism which clamps edges of your sign and holds the clear plastic cover in place. Changing the sign is a simple process of just unclipping the snap frame and swapping the poster. High stability for indoor or outdoor use. The signs is attached to the base with a heavy duty spring to stop the sign falling over. 420mm X 594MM (W x H). Please Note: this item is delivered directly from the manufacturer and the lead time for delivery is 5-7 working days.