Basic Unit A, Plan View, 12" x 16" (or 18")

With Electric Cable Slots

and Interlock Clip Grooves

 Basic Unit B Splittable, Plan View, 12" x 16" (or 18")

With Electric Cable Slots

and Interlock Clip Grooves

 Optional Straight Split Unit, Plan View, 12" x 16" (or 18")

With Electric Cable Slots

and Interlock Clip Grooves

 Basic Unit, Section View, 8" x 12"

With Electric Cable Slots

and Interlock Clip Grooves

 Serpentine Cap Unit, Plan View, 8"/6" x 13"

 Cap Unit, Section View, 3-5/8" x 13"

 Corner Unit, Plan View, 8" x 16" (not for 18")

Corner Unit, Plan View, 4" x 12" (or 13")

 Interlock Clip, Section View

 Gravel Fill

 Geogrid

 Concrete Adhesive