Yes but iPot optimizes its weight performance when it'is on the floor.
Every module measures 20.5 x 20.5 x 20.5 cm.
No. The tubes are always 19.5 cm.
iPot is not designed for that use.
Yes. iPot can be used outdoor; However if you put iPot in a non-covered place we suggest to put the plants with their pot inside the iPot bags and not to plant directly in the soil.
iPot is shipped in very small packages (iPot 5x5 package measure 22 x 22 x 22 cm); the cost depends by the country you live. Contact us and we tell you the exact cost.