🐾【Extra-large Dog Door】Petouch Pet Door has an extra-large flap of 11.7" x 16.7" and a strong frame. The dog door is designed with specific height ratio as dogs tend to keep their heads tucked when entering..🐕【Cost Efficient】With solid magnets and brush seals, Petouch Dog Door seals tightly and insulates extremely well against all weather conditions..🦮【Cutting Template Included】Petouch Plastic dog door comes with a cutting template that helps in precisely locating the cutting area. Easily fits into standard-size paneled, wood, glass, metal and PVC doors 1/2 in - 2 1/4 in thick. （Reminder: Before installing pet door frames on a hollow door, please fill the gap inside the door with base & spacer.）.🐩【Built to Last Forever】Petouch Doggy Door will stay with your dog from puppyhood to old age. No replacements, no adjustment - buy a large pet door that will last a lifetime..🐕🦺【High Quality Material】Constructed with special plastic that can withstand -40 degree temperatures and extreme heat, while perserving the light weight feature.