Features LONG LIFESPAN: Acrylic clear thermostatic safe box is better than transparent thermostatic safe box made of common plastic, it will not change color or turn yellow, even if long-term use can keep the inside clearly visible. SUITABLE FOR MOST THERMOSTATS: The lockable thermostat protector has an external size of 7.3 x 4.7 x 2.2 inches and an internal size of 7 x 4.5 x 2 inches and can be used in homes, offices, churches, schools and industrial environments among others. DRILL OR NOT DRILLING: There are two mounting methods, drilling and gluing. If you don't want to damage your wall, you can stick with nanoglue (no residue) so your wall always looks like new. CONTROL ENERGY USAGE: This thermostat cover helps you control energy usage in a commercial or residential environment. Without a key, no one can access the thermostat and change the thermostat settings. KEY-FRIENDLY: Thermostat cover with 2 keys prevents tampering, damage and unauthorized adjustment of thermostat settings. Keep your controller away from annoying fingers, protect your thermostat and avoid costly bills. Specification: Item Type: Thermostat Lock Box Material: Acrylic. Suitable: for thermostats 7" H x 4.5" W or smaller Package List: 1 x Thermostat Lock Box 2 x key (key fob connection) 4 x Screws 4 x Wall Plug 4 x Ribbons Package List 1 x Thermostat Lock Box 2 x Key(key ring connection) 4 x Screw 4 x Wall Plug 4 x Tape