Attach the reinforcement rails to the back of the node using two 5/16" hex bolts, two 5/16" hex bolts, and two 5/16" 1.25" OD washers. Insert the bolts the bottom two holes of the node enclosure, using the bottom holes of the rails as shown in the image.

Line up the top holes of the rails with the top node enclosure holes and then tighten the bottom bolts.