Feature: 1. Suitable for Most Thermostats: The size of the household thermostat box is 18 x 10 x 5 cm, and most thermostats can be used. Before placing an order, please check if the size matches your size. 2. Premium Acrylic: The constant temperature lock box is made of transparent acrylic board, which can effectively prevent yellowing and is resistant to chemicals and ultraviolet rays. It always maintains cleanliness and aesthetics, and can clearly see the temperature display. 3. Long Service Life: The transparent constant temperature lock box is made of high‑quality acrylic, which will not discolor or turn yellow, and will not cause problems such as mold. It can be used for a long time without the need for frequent replacement. 4. Widely Used: A constant temperature lock box helps to greatly control energy use, helping you control energy use in restaurants, offices, churches, schools, and industrial environments. 5. Easy Installation: No special tools are required, just install anchors and screws on the wall thermostat to complete the installation. It can be completed independently, which is very convenient and can be completed in a short time. Specification: Item Type: Large Thermostat Guard Clear Cover.Material: Acrylic Package List: 1 x Large Thermostat Guard Clear Cover4 x Screw4 x Expansion Tube1 x Key1 x Adhesive Tape