Specifically made for the ecobee Smart Thermostat Essential Covers scuffs, marks, small holes, gaps, and old wiring for a clean, polished wall finish Designed with smooth, round edges to go with your Smart Thermostat Essential and fit flush against your wall Easy-to-follow mobile guide ensures quick installation. Just scan the QR code on the box Installs over any electrical or junction box (a plastic or metal box that houses wires) for a hassle-free setup All ecobee Smart Thermostats come with a Trim Kit in the box except Smart Thermostat Essential & Lite