This is a lid designed for Juice Plus Tower Garden. It was designed for the Flex system. Use it to cover the holes that are not in use to prevent rain/bugs/whatever from entering. The pieces actually snap into place and do not move in the wind or anything, yet easily lift off.
If you print it and put it over a hole and it does not snap on, try again. SNAP it on.
The author marked this model as their own original creation.