The Horizontal Telescoping Hideaway (CBY) fan coil unit is mounted fully-recessed for ceiling-recessed applications. The CBY's telescoping frame with hinged panel adapts to any ceiling type and ensures exact alignment of the panel with the ceiling. The hinged-bottom panel provides easy access to all internal components. Standard CBY units are provided with a galvanized finish on the cabinet and powder-coat paint finish on the bottom-access panel.