Usage Tips:Universal Thermostat Lock Box with Key, Clear Large Thermostat Guard for Thermostat on Wall, Thermostat Guard, Thermostat Cover Fits Thermostats 7H x 4.5W Inch O < br > < br > Features: <br > <br > A thermostat cover with 2 keys can alter, damage and adjust the thermostat setting without authorization. Keep your controller at rest. Keep your thermostat away from trouble, and avoid high bills. Suitable for Fit most thermostats The outer size of the thermostat protective cover with a lock is 7.3'*4.7'*2.2', and the inner size is 7'* 4.5'*2', which is suitable for most thermostats on the market. It can be used in offices, churches, schools and industrial environments. Long lifespan Transparent lock boxes constant temperature are superior to transparent boxes at low temperature. constant temperature in plastic. They do not change color or yellow, and can maintain high visibility. clear internal sound, even at low temperatures. long term. There are two installation methods: punching and nano adhesive. If you don't want to damage your wall, you can use nano glue for bonding (no residue), so that your wall looks : incl.; 1pcs Incubators