Features: [Thermostat Guard with Keys] The thermostat lock box with 2 keys can prevent tampering, damage and unauthorized adjustments to the thermostat settings, protecting your thermostat from high bills. [Fits Most Thermostats] This thermostat lock box with 20x12x5.7cm fits most thermostats, suitable for different shapes of thermostats. Please check the size before purchasing. [High Quality Acrylic Material] The transparent thermostatic lock box is made of high quality acrylic, which will not change color or turn yellow, and will keep the interior clearly visible for long-term use. [Easy Installation] The open thermostat guard allows for installation without removing the thermostat from the wall, simply punch holes around the existing thermostat to mount it in the right side panel. [After-sales] If you have any questions, please get in touch with us, our service team will provide you with a professional and satisfactory service. Specification: Product Name: Thermostat Lock Box Color: Clear Material: acrylic Size: 20x12x5.7cm Package includes: 1 x Thermostat Lock Box 2 x Keys 4 x Screws 4 x Expansion Nails 1 Roll of Nano Adhesive