The MRCOOL Olympus Duct 9,000 BTU is a hidden air handler for small rooms. It is part of our Slim Duct Multi-Zone collection. Because it is hidden in the ceiling, it’s perfect for minimalist interior designs. It can be paired with other units in a Multi-Zone setup. This unit provides quiet, invisible cooling and heating. It is an excellent choice for bedrooms or small offices where you want a clean look.