Bobrick B 295x24 Commercial Bathroom Shelf, Stainless Steel, 5"W, 24"L Mount Type Wall Mount The square hook unit is The square hook unit is 4 inches in width by 4 inches in height and is secured to the wall via four countersunk screw holes and the included hardware Bradley 107 255 "Service Only" Access Cover Replacement Part the Bobrick B 295x24 Stainless Steel Shelf is an ideal option The strength and attractive appearance of the shelf make it suitable for use for a variety of purposes from holding personal effects in toilet compartments to completing sink areas to offering storage space in a corridor or maintenance workroom