42,000 BTU Ductless Single Zone Air Conditioner/Inverter Ceiling Cassette Heat Pump Package. LG's Four-Way Ceiling Cassette systems, such as this LC427HV, have several advantages over wall mounted systems. By recessing the LCN427HV indoor unit, a 1.5" thick grille is the only part of the equipment that stays visible. Unobtrusive comfort isn't the only advantage of a ceiling cassette; with four air flow directions, the LC427HV provides excellent coverage for large zones. If you're looking for a low-profile alternative to wall mounted ductless heat pump systems, LG's Four-Way Ceiling Cassettes are a great choice.