You would need two sets to fill a bounty and one set would work for 360 or harvest models (which need 23 each). I have smaller (sprout) and larger (farm) sets in other listings, but this size works for all. These are designed for the old and new seed starter trays for sprout, bounty, harvest and farm models.
This is a 3d printed plastic design created and printed by our family. They are made to flex so plants or flowers can be safely transplanted or pulled away after they are done growing, and then the covers can be reused in your next garden. Aerogardens only used to photograph to show how items work. If you also need seed tray spacer covers those are in another listing. More aerogarden 3d parts coming soon to the shop.