Thermostat Guard with Key, Thermostat Cover with 2 Keys prevents tampering, damage and unauthorized thermostat setting adjustments. Keep your controllers away from pesky fingers, protect your thermostat and avoid high bills. The outer dimensions of the thermostat guard with lock are 7.3 inches x 4.7 inches x 2.2 inches, and the inner dimensions are 7 inches x 4.5 inches x 2 inches, which fits most thermostats on the market. It can be used in home, office, church, school and industrial environment etc. Long service life, maintains clear visibility inside even after long-term use. There are two installation methods of punching and nano glue. If you don't want to damage your walls, you can use nano glue for bonding (no residue) to make your walls new forever. Color: parent Material: plastic Package Contents: 1 x lock box 2 x keys 4 x screws 4 x expansion tubes 1 x parent glue Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.