RATO & URBI Watering System is an excellent choice for all 400mm square plant pots. It is made of high-quality plastic - polypropylene. It is stable, functional, robust and UV-resistant. The watering irrigation system enables water to be collected at the bottom of the plant pot, thus reducing the need for frequent watering.

For use in pots:

https://greenleif.sg/products/prosperplast-rato-square-basket-weave-flower-pot-400x750mm