The Eurowings Airbus A320-200 presented here is configured with 174 seats that are sectioned into two separate classes - BIZclass and Economy.
BIZclass features additional legroom and 18 standard seats that are reduced to 12 available for selection due to the blocking of the middle seat to provide additional personal space.
Economy class (Basic and Smart fares) features 156 standard seats. The first nine rows in the section (rows 4-12) feature additional legroom available for selection at an additional fee.