DESC: Zoneline units are designed with universal components, and offer even greater installation flexibility than ever, whether construction, renovation or for replacement of old units. Unless specified by code, they require no sub-base and may be installed flush with finished floor. All models are adaptable to remote and central desk control. Zoneline units may even be placed in unusual locations, such as transom or common area installations. The two lines, Deluxe and Premium, each with its own special blend of features, offer flexibility to meet each zone application. All units come with microcomputer controls.