This down under plant stand is lifts pots to allow airflow and prevents water damage to decks, wooden floors and carpets. Easily adjusts to hide under any size pot and will support up to 500 pounds. 12-inch stand easily adjusts to pots with a 4-inch to 12-inch base. 16-inch stand easily adjusts to pots and planters with a 10-inch to 16-inch base.