Shelf units adapted to be mounted on vertical walls for displaying merchandise are adapted to utilize removeable hooks which are used for cross-merchandising complimentary products. The shelf unit is also adapted to be mounted on the exterior face of a wall, door or window of a refrigerated vault or...http://www.google.fr/patents/US7051885?utm_source=gb-gplus-shareBrevet US7051885 - Cross-merchandising display shelf
