Once you have the frame design set up, you can fine tune the fit as- Legs can swivel on the elbows, so you can swing them left/right or back/forward to adjust the size to be wider or narrower, longer or shorter- You can run a stringline through the holes in the legs and the firmer you pull that the narrower and higher the frame becomes, legs can almost be vertical from the hub- In raised garden beds, you can sit the frame on top of the soil and push the legs into each corner- These all make the frames adjustable. As an example the Tall Mini can be configured so that it is between 800 – 1500mm wide and 1600 – 3000mm long