PREPARATION Before beginning assembly of product, make sure all parts are present. Compare parts with package contents list and hardware contents list. If any part is missing or damaged, do not attempt to assemble the product. Estimated Assembly Time:30 minutes. Tools Required for Assembly Key. Step 1 Step 2 Step 3 Step 4 Attach 3*Bottom Stretchers (D) to both Attach 2*Upper Stretchers (C) to both Flip the assembled metal based Flip the seat upright and then fully Side Frames (A & B).