EASY TO USE: Perfect for creating a cat-friendly space and keeping unwanted visitors away < p>WATERPROOF: Weatherproof cat flap to withstand wind and prevent rain from getting in. Pretty round white polycarbonate cat flap with transparent flap: allows cat to see through < p>Cat flap for doors, windows and glass doors up to 1.5 cm thick 4 locking modes: only entry, only exit, unlocked (entry and exit), locked Anti-draft: magnetic door and seal protect against rain and draughts. Low noise when opening and closing