Shelf Hangers - 16" Wide X 12" Tall [4 Pack],Quick-Shelf Inc.,04160012" /> Holds 350 lbs per vertical column of hangers. Simple hook through construction allows you to effortlessly hang shelves. Skip shelf boards to create "double tall" shelves. Accomodates 16" wide plywood or melamine. 16" width perfect for hanging shelves parallel with overhead floor joists.