The Karlie cat doors Porta make life easier for outdoor cats and their owners. They consist of a frame, a hinge, and a horizontally mounted flap. The latter is pushed forward by the animal's head to pass through the opening. This allows the cat to independently and safely move between the house and the outside area. A magnetic closure and a brush seal make the cat door weatherproof and draft-proof. Thanks to the locking system, it can also be controlled whether the cat can go in and out freely or if access is restricted. The mechanical cat door with a 2-way lock offers the choice between open (out and in) and closed. The door is available in white and brown.