Tamper-Resistant Design The thermostat lock box with 2 keys prevents tampering, damage and unauthorized adjustment of thermostat settings. Better protect your thermostat from unauthorized settings and avoid artificially high costs. Premium Grade Acrylic Made of high quality acrylic, superior to plastic clear thermostat covers. No discoloration or yellowing. The thermostat lock box keeps the interior clearly visible even after long-term use. The lock box is waterproof and easy to dissipate heat, easy to clean, and neat while protecting the thermostat. Preserve Temperature Precision Precision-engineered grooves on all four sides ensure the thermostat inside maintains accurate temperature readings. This design prevents interference or obstruction, allowing your heating and cooling system to function optimally without compromise. Size and Compatibility Measures 7.28"W x 4.72"H x 2.2"D, compatible with most thermostats and HVAC systems. Whether it's for your home, apartment, school, office, restaurant, hotel, or rental properties, this ac thermostat lock box cover finds its place everywhere, ensuring optimal protection and security. Use Scenarios - In rental properties to control energy usage and prevent thermostat abuse. - In offices or public spaces to safeguard settings while keeping the unit accessible for maintenance. - In hotels, schools and restaurants to maintain a consistent climate and protect equipment.