You need the following to assemble: Screwdriver, ladder/stool and metal saw (if cutting extension hang standard). Before you start: If the extension standard needs to be cut, start by doing this. Step 1: Start by hanging the standard on the top track. Note that an extension  standard can not be mounted on a top track - only onto a  standard (using an extension  standard adapter). Separate out the screws from the extension hang standard adapter. Bend out the hang standard slightly from the wall and slide the top part of the extension standard adapter into the standard from underneath. Step 2: Fasten the adapter with one of the screws by using a screwdriver. Step 3: Slide the small, color-matching, plastic piece and the extension standard onto the adapter. Step 4: Fasten with the remaining screw . Note: When fastening the standards to the wall with screws, do this after all functions in the system are mounted, to ensure the correct position of the standards. When combining a standard with an extension standard and an extension standard adapter; only the middle screw hole in the standard can be used to fasten the standard into the wall (the bottom one is used for the adapter).