Emerson F29-0192 Thermostat Guard, Solid Base, Metal Locking thermostat guard to protect your thermostat from unwanted tampering Tamper-resistant, hinged design furnished with one key Can be mounted vertically or horizontally Beige enamel finish over heavy-duty steel enclosure Fits Emerson and White Rodgers thermostats except 1F80 Classic and 1F90 Blue series