How to fix a twin shelving system into wall?

Prostore Shelving Wall Mounted screw fixed uprights & brackets twin slot shelving systems Twin slot shelving system brackets uprights QTY: 1 pc Upright sizes: L951mm, W25mm, T12mm Bracket sizes: - 170mm twin slot shelving bracket It is referred to as a twin slot system due to the fact that each frame has two columns of slots running from the top to the bottom The secure mounting of the

twin slot bracket Our Twin Slot System has an industry standard 32mm pitch Twin Slot uprights are available in a choice of three finishes; white, black or chrome and in a range