Honeywell Versaguard Universal Thermostat Guard, Painted Metal Color, Opaque Polystyrene Ring Base and Wallplate Color, 5 1/16″ Inside Height, 6 1/16″ Inside Width, 6 1/2″ Outside Height, 7 1/2″ Outside Width, 2 15/16″ Outside Depth, Vents in Guard Allow Airflow to Thermostat