Thermostat Guard with Key Thermostat lock box with 2 keys prevents tampering, damage and unauthorized adjustment of thermostat settings. Keeps your controller away from pesky fingers, protects your thermostat from high bills. Fits most thermostatsThe home type thermostat box fits most thermostats.The outer diameter of this thermostat lock box is 7.87''*5.51''*1.97''.The actual usable size is 6.5" H x 4.72" W x 1.65 "D.It fits all shapes of thermostats as long as the size is less than or equal to 6.5" H x 4.72" W x 1.65 "D. Please check dimensions before purchasing. Long service life Transparent thermostat lock box made of high quality acrylic, better than plastic transparent thermostat lock box, will not change color and yellow, long-term use can also keep the interior clearly visible. Easy Installation The open thermostat guard allows for installation without removing the thermostat from the wall, just punch holes around your existing thermostat to install it in the right place, you can install this thermostat guard horizontally or vertically to fit your thermostat. Widely usedThermostats anywhere! thermostat lock box helps to control energy use to a great extent. It can help you control energy use in restaurants, offices, churches, schools and industrial environments.