This Abstract pyramid volume is 700mm wide by 700mm and 150mm tall.
It has 15 T nut placements on it to add extra holds, a great way to break up a boring flat wall, by screwing one of these to your woodie

You might need some 35mm bolts to use the outer edge of placements 

Plywood screw on volume.

Our volumes are made from 18mm plywood and have a textured coating on them.