Classical guitars are similar to acoustic guitars in the number of keys. Besides, the current nylon-string classical guitar is only equipped with 12 frets. The reason is because for those who play acoustic guitar, they will usually not play on the frets higher than 14 and classical guitar is the opposite.
Another special feature of these tables is that classical guitar manufacturers have added six to seven frets to their models. It is because of this that a classical guitar will in fact come with 17 frets.