US Patent 11702885 Securable pet door

An interchangeable pet door is disclosed. The interchangeable pet door comprises a door, a knob, a plurality of windows, a frame, and a hinge. The knob comprises a latch for securely closing the door. When the interchangeable pet door comprises a hinge, inserting the hinge into a hinge recess securely locks the door. The different elements of the interchangeable pet door are configured to be oriented in a predetermined, interchangeable, or customizable manner. The door is configured to open from, slide into, revolve within, or move in some other non-limiting equivalent way from or relative to a frame.