Distinguished Design: An Ideal Design for Achieving Optimal Performance Ceiling design for spaces plays an important role in the aesthetic appeal of interiors, and designers pay great attention to what cassette air conditioning units should be installed in the ceiling to meet the needs of each space. The ceiling-mounted cassette air conditioner has become an important part of the interior decor of rooms. LG's new circular cassette air conditioner, awarded the Red Dot Design Award in 2019, features an advanced design that adds an aesthetic touch to elegant interior designs.