4 aircraft and 5 cabin layouts, from the DHC Dash 8-100/200 to the 190-E2. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 4 Widerøe aircraft here: the DHC Dash 8-100/200, the DHC Dash 8-300, the DHC Dash 8-400 and the Embraer 190-E2.
The Embraer 190-E2, with 110 seats: 110 Economy in its main layout.