Pet Door Flap

pet door, typically installed on doors or walls.
It allows cats & Dogs  or small pets to move freely between indoors and outdoors.
The flap is made of transparent plastic so pets can see through.
Around the edges, there is a brush-like seal to reduce drafts and noise.
The door has a 4-way locking system at the bottom.
The four lock options are: in-only, out-only, fully locked, and fully open.