This weather proof poster board was exactly what I was looking for. I have a business with metal shutters and unfortunately when I'm closed the public cannot see any notices in my window, this lockable poster board solves this problem. I fitted it quite easily next to my shop front where it's visible for pedestrians walking by to see, combined with an eye catching brightly coloured poster it really is quite effective.The fact that it's lockable you can be rest assured your poster is safe from the elements like wind and rain, before this purchase I just use to selotape a piece of A1 paper on the side and hope it would still be there the next day, on the odd occasion it would disappear.I would recommend this product undoubtedly for businesses who require additional signage to there shop front or, perhaps businesses which are located on a first floor above other shops this would work very well.