Why air root pot instead of gallon pot

(1)Prevent damaging root circling;
(2)Root pruning produces  healthier root structure;
(3)Remove the screws, the sidewall drop off, fast  plant rejuvenation after  transplanting:.  

How to assemble the air root  pot?   

Place the chassis on the side, by the bottom of the second groove,  on the side, the punching (projection, hole) side outward,   the side edge of the chassis into a circle, the side of the 2  overlap, with screws fastening.