US Patent 11788345 Animal kennel door system

Various implementations include an animal kennel door system. The system includes a door frame and a door. The door frame includes a frame body and one or more connecting flanges. The frame body defines a frame opening, and each of the one or more connecting flanges extends from the frame body away from the frame opening. The one or more connecting flanges has at least one coupling surface. The coupling surface has at least a first coupling portion and a second coupling portion. The door is hingedly coupled to a portion of the frame body. A portion of the first and second flange coupling portions each lie in a different plane, and the planes are transverse to each other.