The single slot design allows a 180-series bracket sold separately to easily lock into the standard. Make use of the drill for easy installation. Never Seem To Have Enough Storage The Shelf Made White Finish 8 In X 24 In Adjustable Shelf Kit Is The Sustainable S Adjustable Shelving Shelves Shelf Decor Made of durable steel construction. Adjustable shelving standards . FREE Shipping on orders. A shelving system is made up of three basic components. It features standards with a single column of slots that accept flat metal brackets. Adjustable shelves come in two basic types. Standards Shelf Brackets and Shelves. Invented in 1934 by Knape Vogt this adjustable shelving system has been the most specified wall-mounted adjustable shelving system ever since. A wide variety of decorative shelf brackets in multiple finishes as well as industrial strength brackets. How to Build Adjustable Shelving Place one 68-inch board in a table vice tightened in the middle of the board.