Talk:Clan Castle/@comment-32478620-20190516024209/@comment-25856498-20190516080004

Clan perks level

If your clan is at least level 5 any troops you donate will automatically go up a level if possible. If your clan is at least level 10 then the donations will automatically go up two levels

In both cases this is limited by the maximum levels available in the game (not by the maximum levels available in your TH level)