The Kendall Howard Rack Mounted Centerline Vented Shelf is one of the strongest, most stable, shelves on the market. Unlike most centerline shelves, which may teeter, our centerline shelf is rock solid. The mounting flanges are not only press welded onto each side, but they wrap completely around the bottom to give it unprecedented stability and strength. This patent pending design will truly prove to be one of the strongest racking components available. The sturdy design ensures that server rack accessories will stay exactly where they belong. As with all of our shelving units, this shelf is made from 14-gauge (.074 Steel) and formed by hand one bend at a time for the highest quality.