Furnish and install Mitsubishi AC unit as specified. Perform Preventive Maintenance for existing RTU. Furnish and install exhaust fans with associated accessories as specified. Furnish and install ductwork, branches and accessories. Furnish and install flue ductwork as specified. Furnish and install ductwork and piping insulation as specified. Furnish and Install supply and return grills and diffusers as specified. Furnish and install volume dampers. Furnish and install thermostats and sensors as specified. Furnish and install smoke detectors. Furnish and install refrigeration and condensate piping. Provide with Shop/as-build drawings. Perform Systems start up. Perform air balancing and provide with certified report.