Open - 'Open' clans are available for all players to join until full capacity is reached. However, a required amount of trophies may apply.
Join Request - 'Join Request' clans require you to send a Join Request first. Your request can either be accepted or denied by the clan's Leader, Captain or Elder.
Closed - You can't enter a 'Closed' clan.
When managing a clan, you can switch between clan types at will.