Your herb planter can be any size you want. In this case, we had enough timber to make a top box, base box, legs, support posts and spacers. Before you cut the timber to size, use a tape measure, pencil and square to measure and mark it. Then use the drop saw to cut the timber to the following lengths:
Top box
90mm x 300mm (sides) x 2
90mm x 750mm (front & back) x 2
90mm x 750mm (base) x 3
Base box
145mm x 300mm (sides) x 2
145mm x 750mm (front & back) x 2
145mm x 750mm (base) x 2
Legs
90mm x 50mm x 300mm x 2
Support posts
90mm x 500mm x 2
Spacers
90mm x 150mm x 2