The Nest Thermostat Trim Kit is designed to cover imperfections on your wall from removing your old thermostat.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page Designed for the Nest Thermostat, the ENERGY STAR certified smart thermostat that helps you save energy and stay comfortable Includes a trim plate for installing your on wall and a steel plate for installing your smart thermostat over an electrical box Modern design that looks beautiful in any home, with perfectly matched Nest Thermostat colors Easy to install, with everything you need included in the box The Nest Thermostat Trim Kit is only compatible with the Nest Thermostat Appearance of colors might slightly vary.