Find the right size

Two models to choose from

  • The model "Medium" shows passage dimensions of 200 mm width and 300 mm height and is suitable for cats and small dogs.
  • The model "Large" is suitable for larger dogs with a shoulder height up to 60cm and its passage dimensions are 300 mm width and 500 mm height.

How do I determine the right size?

  • The shoulder width and the chest height of the animal determine the minimum passage clearance.
  • The belly height is the measure for the maximum installation height and the shoulder width determines the passage width.
  • If more animals of different sizes use the door, the largest animal will determine the model (M or L), the belly height of the smallest animal is decisive for the positioning of the petWALK pet door.
  • The petWALK pet door is particularly convenient when your pet is able to pass through the door without having to crouch or to climb up. This state is reached when the upper edge of the door is placed well above the withers (= raised transition from neck to back) and the lower edge lies just above the ground.
  • If the petWALK pet door is installed into narrow components, such as glazing or doors, even much larger animals can use the door easily and the door can be installed even slightly higher.
  • Note, however, that for optimum function of the sensor, the lower edge of the door leaf must not be higher than the shoulder of the smallest animal.


  • If you are not sure about the size, we recommend cutting the opening (20cmX30cm, 30cmX50cm into a piece of cardboard and try with your pet.
  • For a particularly small animal the use can be facilitated by a small podium.