Place Econo with readable text up. Econo has an opening from the center to the perimeter. Hold each of the sides and open around the stem of your plant . With your right hand side subject where there is a slot	Lift ventilation tabs. One of those tabs will closet he Econo throught the slot. Cross your hands and fix it. Close more or less to fit the pot.	Once you’ve done it, go from bottom to top vent tab corresponding to the desired extent through the opening . Adaptable width 16-23 cm pot sizes. Could be use it at orchard as well.