Give your pet easy access indoors and outdoors. Sturdy thermoplastic (ABS) inner telescoping frame. Dual-pane LEXAN hard panels with an air gap in-between. Flap design prevents trapping of ears paws and tails. Insulated for maximum energy efficiency. Spring-loaded locking slide for one-handed use. Easy secure installation. Available in medium and extra large sizes. Limited lifetime warranty. Now your dog can chase bunnies anytime he wants. Our Ideal Multi-Flex Dog Door allows your dog to enter and exit your home as he wishes. It's constructed of sturdy thermoplastic (ABS) with an inner telescoping frame and it allows easy secure installation. Dual-pane LEXAN hard panels have an air gap in-between and the flap design prevents ears paws and tails from becoming trapped. The spring-loaded locking slide enables one-handed use and insulation for maximum energy efficiency means that you won't lose warm air in the winter and cool air in the summer. The dog door is available in medium or extra large size to accommodate your favorite pup. Limited lifetime warranty. See below for dimensions.Medium Dog DoorOverall dimensions: 10W x 2D x 15H inchesFlap dimensions: 6.625W x 11.25H inchesHole dimensions: 8.875W x 13.5H inchesSuggested pet weight: Up to 35 lbs.Extra Large Dog DoorOverall dimensions: 13.5W x 2D x 18.5H inchesFlap dimensions: 10.25W x 15.75H inchesHole dimensions: 11.75W x 17.375H inchesSuggested pet weight: Up to 90 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.About Ideal Pet Products Inc.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. Size: Extra Large Medium.