PetSafe Plastic Dog Doors represent the best in affordable, performance doggie doors. If you want to give your giant dog the freedom to let themselves in and out, as well as free yourself from the tyranny of door duty, you need a dog door.

These dog doors give your big dog mobility and control in taking themselves out and letting themselves back in. These doggie doors are easy to install and install in a wide variety of doors. The plastic pet door frame is tough and durable, withstanding constant use with ease. The dog door flap seals securely to insulate and protect your homes temperature.

Big dog size XL: 13 7/8" x 23". For dogs up to 220 lbs.

How to measure for door size:

Step 1. Measure your pet from the top of the shoulders to the chest, just behind the front legs. Then measure the width of your pet at the widest point. This will be either the shoulder or hip area.
Step 2. Determine your pet's weight.
Step 3. Select the correct door size based on your pet's measurements and weight. You will need a pet door with an opening size that is bigger than your pet's measurement.