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How to Measure

There are three measurements to take into consideration when choosing the correct size door for your pet:

Measurement 1

measuring your pet

Width – This is the easy one. Simply measure your pet at the widest point and add an inch or two for safety. If your pet is long haired, don’t forget that this may make them appear wider than they really are. Alternately, you can open a door just wide enough for your pet to pass through and measure the width of the opening, again adding an inch or two for safety.

Measurement 2

Height — The pet door flaps should be at least an inch or two above the top of your pet’s back not the head. To get this length, measure your pet from the withers (top of the shoulders) to the floor. Remember that your door won’t be placed completely at floor level.

Measurement 3

Rise — This measurement is only applicable for panel models which come with the rise built in. Door, wall, screen, and window models can be mounted at whatever height is comfortable for your pet. If you have a short-legged dog or an older dog that can’t lift his feet very high, or if the door is installed with a step on either side, consider ordering a “no rise” door. Our standard rise is 5” or 10”.

See Size Chart here.

rough opening measuring guide

If you have limited space for your pet door, you need to take into consideration both the rough opening size (the hole cut into your door, wall, etc. represented in green above) and the tip to tip size (the outermost frame measurement represented in beige above). Using the graphic and chart above as a guideline, measure your available area and see which standard size best fits your situation, keeping in mind the size of your animal (see section below about how to measure your pet). If necessary, we can supply a custom size door made to fit your available area while providing the largest possible passage opening for your pet.