3 aircraft and 4 cabin layouts, from the 72-600 to the A320. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 3 Bangkok Airways aircraft here: the Airbus A319, the Airbus A320 and the ATR 72-600.
The Airbus A320, with 162 seats: 162 Economy in its main layout.
The Airbus A319, with 31" of seat pitch in Economy and seats 18" wide.