Review on 2020 Models: Highly Efficient Aluminum Dog Door with Rugged Seal Flap - Available in 4 Sizes for Every Dog - Choose Single or Dual Flap Option by April Rodgers

It was a bit expensive but after installing it I understood why. It's really well built. My German Shepherd loves it. My little one is old and has arthritis and double lobe problems. I have two small disadvantages. First, the instructions could be a bit more descriptive, which wasn't a problem for me, but most people don't have my building background. Second, the robots designed to connect the two halves are too long and never reach the correct breaking point, so they stick out half an inch. I had the rivets the right length and everything worked great.