This handcrafted wooden cover hides most modern thermostats, but has holes in the bottom and open space between the door and box for air flow. Its wax-and-paint antiquing and leather hinges give it a great rustic look and the pre-drilled hole in the top makes it easy to mount over your fixture. Outside dimensions are 9-1/2" H x 11-1/2" W x 5" D. and the inside opening is 5" H x 9-1/4" W.