Four types of grids divided into two grids with a square shape and size 180x180, two grids instead with a circular section with a diameter of 2 m. Useful both for the aeration of the roots and to protect them.
1:100 Scale dwg file (meters)
Conversion from meters to feet: a fast and fairly accurate system consists in scaling the drawing by multiplying the value of the unit of
measurement in meters by 3.281
