A higher than usual step over height will limit the cat s.
Cat door height.
Before purchasing a new dog door or cat door consider the size.
Measure the height of your cat s belly from the ground to its stomach with a measuring tape.
Measure the height and width of the cat flap and mark the dimensions on the door using the height of the cat s stomach as the center point.
Width measure the widest part of your cat the chest or hips.
Measure your cat s belly to the floor.
Another thing worth considering is the step over height of the door flap.
Stand your pet up straight.
This is the ideal height to install the cat door.
Below the neck between the shoulder blades also known as withers.
If the structure of your house prevents this make the exterior of the cat door more secure by positioning plant pots or benches close by for your cat to hide behind.
Petsafe cat door size chart pet door size pet weight flap opening size width height small 1 15 lbs.
Measure your pet s height.
Locate the tallest point on your pet s back.
The width of the pet door should be 2 inches wider than the measurement between your pet s shoulders see pictured.
Add one to two inches.
This is how high up the cat door needs to be from the bottom of the hollow core door.
This means that it should be easy for the cat to move in and out of the house.
This is the height which is measured from the bottom of the door to the point where you install the lower part of the cat door.
The height of the pet door should be 2 inches taller than the measurement between the top of your pet s shoulders and the bottom of its chest see pictured.
Subtract the height of the dog door opening for instance 16 24 16 8 height off the interior floor for the dog door install opening.
5 1 2 5 8 small 1 25 lbs.
2 for clearance for dog s back not to hit dog door 24 height of desired dog door opening.
Cats like to feel secure when they come into and go out of the house.
The step over should be as low as possible for your dog to go through comfortably as your pet gets older they may begin to find it difficult to get through a door with a high step over.
Now you know how high the door must be to accommodate your tall dog.