3 aircraft and 4 cabin layouts, from the 737-800 to the A330-900. Pick one for its seat map, the best seats and the seats to avoid.
There are seat maps for 3 Lion Air aircraft here: the Airbus A330-900, the Boeing 737-800 and the Boeing 737-900ER.
The Airbus A330-900, with 440 seats: 440 Economy in its main layout.
The Airbus A330-900, with 32" of seat pitch in Economy and seats 16.8" wide.