Small: 8 in: Recommended with pots up to 6 in high, or all setups with height difference 5 in.
Medium: 12 in: Recommended with pots from 4.5 to 10 in high, or all setups with height difference up to 9 in.
Medium: 12 in: Recommended with pots from 4.5 to 10 in high, or all setups with height difference up to 9 in.