[REDUCED ENERGY BILLS] The thermostat lid lock is a clear lock for air conditioning and heat control; the clear plastic allows a clear view of your unit while preventing tampering. [EASY TO INSTALL] the open thermostat shroud allows for installation without having to remove the thermostat from the wall, simply line up the existing thermostat and install it. We have both perforated and non-perforated mounting methods which protect your walls from damage. [UNIVERSAL SIZE] You can use this with almost all thermostats and other controls. Prevents tampering and unwanted temperature changes. This thermostat cover can be used in restaurants, offices, churches, schools and industrial environments. Anywhere there is a thermostat! Color:Transparent Material:plastic Package Contents: 2 * thermostat lock boxes 2 * keys Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.