Mitsuei super-silent fan coil units (FCUs) are designed and manufactured in various models, including concealed ceiling and ducted types. They come in both two-pipe and four-pipe configurations, with options for rear return, bottom return, and economy designs. A key advantage of Mitsuei fan coils is their ability to withstand very high static pressure, especially the ducted models which are optimized for static pressures exceeding 50 Pascals. Furthermore, Mitsuei FCUs operate with very low noise levels, even at high speeds, while still delivering high heating and cooling capacities. The body, fan, and housing of Mitsuei fan coils are constructed from durable galvanized steel, and all connections are secured with screws.