4-way Cassette indoor units for DC-multi (Free-match) systems, to be mounted on the ceiling, ensuring the first installation of the unit, and then install the decorative air-supply panel (which equipped for entry and exit of air). The main distribution of the air takes place in 4 directions, additional angular channels provide more even air flow, the air flow deviation can be adjusted vertically by the deflection shutters. All cassette indoor units are equipped with built-in drain pump, decorative louvre panel and remote control are also included.