Measure for desired height and then dig a 2" - 4" inch trench (below frost line). Footings are required in northern zones.
Panels are numbered on top...I, II, III, IV. Install and then repeat. Panels are available in sizes from 26" x 28" high to 26" x 48" high.
Install panels with vents as needed. Standard vents are 6" from top with a vent in every 6th panel. Vents are factory installed or may be cut in as needed.
Install back rail and attach panels with screws through tabs.
Install back rail and attach panels with screws through tabs.
Adhere panels together with F26 adhesive.
Install cap to back rail.
You may also fit panels under house and screw attach to framing.
After you miter or butt corners and adhere panels with F26 adhesive, grout joints. Then fill trench with soil or concrete.