Suitable for supporting wood, glass and melamine shelving, Econoco's Gridwall Shelf Brackets make Gridwall systems more versatile. Available in 12'L or 14'L units, brackets hook easily over wire grids. These shelf brackets, also known as knife brackets, are made from durable steel and are epoxy-coated in chrome, white, or semi-gloss black finishes. Sold in cartons containing 48 brackets.