CZ-RWS3 CZ-RWRU3W: For 4 Way 90x90 Cassette. / CZ-RWS3: For Wall Mounted and 4 Way 60x60 (with a panel) and Floor Console.
CZ-RWS3 CZ-RWRL3: For 2 Way Cassette. / CZ-RWS3 CZ-RWRD3: For 1 Way Cassette.
CZ-RWS3 CZ-RWRT3: For Ceiling. / CZ-RWS3 CZ-RWRC3: For all indoor units.