US Patent 10273712 Window opening for a fence

A window opening for a fence to allow dogs or other pets to see outside of a privacy fence uses a typical picket with an opening therein. An angle iron based frame has a base leg and a flange leg that approximates the size of the opening in the picket so that the flange of the frame is received within the opening of the picket. The frame is secured to the picket via an adhesive or via screws. A barrier may be located within the inner opening of the frame.