The Karlie cat doors Porta make the life of outdoor cats and their owners easier. They consist of a frame, a hinge and a horizontally fixed flap. The latter is pushed forward by the animal with its head to get through the opening. This way the cat can move independently and safely between the house and the outside area. A magnetic catch and a brush seal make the cat door weatherproof and draught-proof. Thanks to the locking system, it is also possible to control whether the cat can go in and out at will or whether its use is restricted. The mechanical cat door with 4-way locking system offers the choice of open (out and in) and closed, and the options only in and only out. The door is available in white and brown and has a tunnel element (50 mm) for covering the passageway.