Warning Signs – Wet floor. These tough semi rigid warning signs have a very powerful adhesive undercoating. Simply peel off release paper and attach to the A Board on one or both sides. (The warning signs can also be easily applied to any other flat surfaces). For use with ‘A’ Boards. Stick a different sign on either side if required . Powerful adhesive backing. ** Please note Blank ‘A’ Board Stand for sign to go on, to be purchased separately **