Recommended for shelf or end-of-aisle placement; choose from magnetic or backed with VELCRO ® brand fastenersThe sign holders are sealed on 3 sides and open at the top for easy sign insertion. To remove sign, simply turn holder upside down and slide sign out.Holder bottom features a slot to aid in pushing out thicker material, and a finger slot in the back aids in removing 8 1/2 x 11" papers.Magnetic holders attach to flat metal surfaces; VELCRO ® brand fasteners attach holders to walls or wooden shelves with VELCRO ® brand fasteners (included).Overall Dimensions:583101 (with Magnet): 2H x 8 1/2"W583201 (with Magnet): 11H x 8 1/2"WD596401 (with VELCRO ® brand fasteners ): 2H x 8 1/2"WD599601 (with VELCRO ® brand fasteners ): 11H x 8 1/2"WVELCRO ® is a registered trademark of Velcro Industries B.V.