Karelia's language map
Ludic language: 3
Finnish language's karelian dialects: 4-5 they are based on same ancient karelian language as modern karelian language- so these dialects are kind of karelian-finnish language mix or continuation. and for political reasons these dialects are seen part of finnish language. You can think these dialects are "Karelian language's finnish dialects".
thinnest 12 cm, indoor wall recommendation 20 cm