Step 4 · Attach Support Slats
Place the two assembled leg frames upright and parallel to each other, 15 inches apart (measured from the inside edges of the top side rails). Attach the four 15-inch support slats across the legs. Position two slats flush with the bottom of the legs and the other two slats spaced evenly between the bottom slats and the top side rails. Secure each slat to the legs with wood glue and two 1.5-inch wood screws per end. Ensure the slats are level and parallel.