This is a simple doorstopper that slides onto the side of a 35mm deep door to keep it from being closed. This is useful if, say, the door to the area with the cat's litterbox is in a high traffic area, and is sometimes shut completely without anyone noticing (except for the cat, who is now without a proper place to relieve themselves).

Adhesive should not be required for mounting, as the design should gently squeeze the faces of the door.