The StatGuardPlus thermostat cover protects your thermostat and prohibits unwanted tampering while still looking very stylish on your wall. It is fitted with a 3-digit combination lock and the combination code is changeable. It fits most thermostats and is made of high quality poly-carbonate clear plastic. Combination lock with changeable code. Fits over existing thermostat. Stylish high quality clear polycarbonate plastic. Hinged for easy access while open. Slotted on all sides for easy air flow. Fits thermostats up to 7 in. W x 4-7/8 in. H x 2-1/4 in. D. Comes with drywall anchors and screws.