1. Universal thermostat protection: The thermostat protection with lock has an outer size of 18.5 x 11.6 x 5.5 cm, the actual usable size is 15.5 x 9.8 x 4.9 cm. Suitable for types of thermostats, as long as the size is smaller than 15.5 x 9.8 x 4.9 cm. Please check the dimensions before purchasing. 2. Thermostat locks with key: Protect your thermostats from tampering, damage, and unauthorized adjustments with a thermostat cover that comes with a key. This thermostat lock box helps you avoid high bills by keeping your controllers out of reach of annoying fingers. 3. Highquality material: Transparent thermostat lock box is made of acrylic with good craftsmanship quality, does not yellow, and can keep the interior clearly visible after longterm use. 4. Easy installation: There are two installation options for punching and sticking. If you do not want to damage your wall, you can use the sticker for adhesions (no residue), so that your wall looks like . It is recommended to open the door and press the adhesive frame from the inside.