Medium Pet DoorOverall dimensions: 9.25W x 15.5H inchesFlap dimensions: 7W x 11.25H inchesHole dimensions: 7.5W x 13.75H inchesSuggested pet weight: Up to 35 lbs. Extra Large Pet DoorOverall dimensions: 12.875W x 19.25H inchesFlap dimensions: 10.5W x 15H inchesHole dimensions: 11.25W x 17.5H inchesSuggested pet weight: Up to 90 lbs. XX Large Pet DoorOverall dimensions: 17.5W x 24.25H inchesFlap dimensions: 15W x 20H inchesHole dimensions: 15.5W x 21.5H inchesSuggested pet weight: Up to 120 lbs. Note: Look for the template included with your pet door and be sure to use it. Consider your pet's weight and size, and position the template accordingly. This will ensure a correct installation the first time. Ideal Pet Products In the beginning, a hole, an old piece of carpet, and a couple of nails created the first access for your pet to go in and out. But there were drawbacks. It didn't stay closed well. Your pet couldn't see through it. And when it got wet, it didn't smell so good. Enter technology. For more than 25 years Ideal Pet Products has assisted pet owners by offering unique and ingenious ways of providing indoor/outdoor access to their pets. The company provides various styles of pet access doors, so you're sure to find one that meets your specific needs. Ideal Pet Products is also committed to conserving natural resources by designing products that are sensitive to your energy-saving needs. From the smallest dog or cat to the largest 160-lb. pet, Ideal Pet Products has the right door for your home.