Step 7 · Install Drawer Slides in Staircase Opening
Measure and mark the positions for the outer members of the drawer slides on the interior walls of the staircase opening. These marks must be perfectly parallel to each other and level. Use a level and measuring tape to ensure accuracy. Pre-drill pilot holes into the studs or framing members and securely fasten the outer slide members using appropriate screws. Ensure the spacing between the slides matches the dimensions of the drawer boxes.