Step 2 of 4 – Select your UprightsIn Step 1 you choose your system width. In Step 2, you choose the height. Rack It 1000KG Uprights are available in 916, 1830, 2135 and 2438mm heights. All Uprights are 645mm wide, creating a useable shelf depth of 600mm. Two Uprights are required for a one bay shelf. Each Upright features double-slots so you can extend your system over time with extra bays. All you need is an additional Upright along with Beams, Braces and Pins. 916mm Uprights can be used with Rack It 1000KG Castors (sold separately) to create a portable workbench. Rack It 1000KG is a modular storage system, built tough, made up of Beams, Braces, Uprights, Shelves and Accessories. Following our 4 Step process, you can choose exactly how your system will look, making it work for you. Choose your width and height, extend with additional bays and optimise with a range of accessories. No rush though, you can start small and extend over time.