Compact and powerful, the GREE Multi+ Concealed Duct indoor units offer the ultimate in flexibility and discretion. These slim indoor units are designed to be concealed above suspended ceilings or within open closet spaces to deliver conditioned air via ducting and suitable ceiling or wall grilles. This arrangement provides immense flexibility, in terms of both the distribution of conditioned air and the type of grille or diffuser that best compliments the room's styling. Each unit comes with an easy to operate wall mounted tether controller. Medium Static Pressure Capability Slim Line Construction 7-7/8" high Flexible Return Air From Bottom Or Rear Internal Condensate Drain Pump Sentry Float Switch Environmentally Safe R-410A Refrigerant