Shelf is part of Fellowes Mesh Partition Additions that move essentials off the desktop, yet still keep everything easily accessible. Vertical organization adds counter space for displaying or storing office accessories. Shelf has a 4" wide x 18-1/2" deep surface area. Patented ViperPin technology attaches to any tackable wall and supports up to 5 lb. without damaging mounting surface. Shelf is made from a high percentage of recycled material and is 100 percent recyclable.