Which Size Pet Door Do I Buy?

1. Measure your pets width:
   1. Open a door the minimum width needed for the widest part of your pet to comfortably walk through.  Measure the door opening and add an inch. 

OR 

1. Stand above your pet and use a ruler to measure the widest portion of your pet, then add an inch.
2. It is important to add an inch or so, that way your pet will not rub on the door as you pet passes through. 

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1. Determine your pets height:
   1. Measure from the top of your dogs shoulders to dogs belly or chest then add 2 inches.

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2. Here is the door size you need:
   1. If your cat is smaller than about 15 lbs or your dog smaller than about 8 lbs, a flap size of around 5" x 7".
   2. If your dog is between 8 lbs and 35 lbs consider a flap size around 8" x 11".
   3. If your dog is between 35 lbs and 80 lbs consider a flap size around 10" x 15".
   4. If your dog is over 80 lbs consider a flap size of 15” x 20”.