DESC: Thru-the-wall cooling and heating units are ideal in situations when units must be installed flush with an exterior wall. These units are installed thru-the-wall and can be mounted flush with the exterior wall to avoid any unsightly protrusions.Friedrich's new Uni-Fit has been designed to easily replace older, less efficient thru-the-wall models. The universal chassis installs in many competitive sleeves with included accessories. Chassis and sleeves are even sold and shipped separately to accommodate both new construction and replacement situations.