The STI Thermostat Flush Mount Protector is ideal to protect thermostats against vandalism and damage. The protector has slots in the cover in order to allow air to flow freely for the proper operation of the thermostat. The protector is fast and easy to install. Dimensions (H 150mm x D 80mm x W 200mm) Good Condition One key suppled with each STI Thermostat Protector.