This top loading supergrip sign holder can hold material up to a thickness of 4.5mm. Suitable for using vertically, horizontally or even upside down these easy to use sign holders can be quickly attached to your shelf or wherever you want to use them by peeling off the protective layer of the adhesive backing. A super quick and versatile option for displaying pricing and promotional material, load from the top and the 2 grippers will hold the signage material in place.