PetSafeExtreme Weather Aluminum Pet Door - Energy-Saving Thermal Barrier Pet Flap with Slide-in Door Locking & Secure Flap Cover - for Dogs Up to 40 lb - Medium

Exactly what I wanted and works perfectly for my large dog: (Doberman/great Dane) … my cats also use but be aware has very heavy flaps. I removed the interior insulation that is between the two flaps to make the door easier for all of my animals

Sturdy! Keeps critters and weather out.Com: dogs were slightly afraid to go through it at first since the doors are so heavy. Even XL dogs have a hard time pushing through the flaps, but this thing is awesome.

Literally the best thing I’ve ever bought for my dogs. I was worried it might let in too much cold or let out too much A/C but the triple layers are perfect and they have the ability to come and go as they please. Win/win. I love being able to close it at night as well, to keep out unwanted animals and to keep the pups inside. Install and training was relatively painless as well.

We have the Extreme Weather XL dog door for our 85 lb Boxer and 140 lb Cane Corso. I would give it 5 stars for the first 6 months, 4 stars for the next 6 months, and 3 stars after the 1-year mark.I was impressed with the quality and fit when I received the door, the problem is it didn't hold up for long. "Extreme Weather" is misleading, at best I would say it's a 3-flap version. Due to the size of an XL large door, nothing keeps the weather out, especially on windy days. I hoped for a little more considering it's called "Extreme Weather" and was a more expensive. I'm having to replace the flaps more often, the 6-screw design helps avoid tearing where the screw holds the flap. After a year the bottom edges of the flaps began tearing evenly about two inches from the bottom (same on both flaps, inside and outside, and the left and right side). They all tore the same, it's apparent it needs someone to revisit the design and material. Other issues with the material are shrinkage and bowing of the outside flaps. The center flap, insulating flap, comes apart along both seams. The center flap is basically a piece of thin foam sandwiched between two heat sealed pieces of plastic. It doesn't appear they "designed" an XL large, weather resistant door, for large breed dogs. They just made a larger dog door based on their other models. I don't think consideration was given to the size of the dogs hitting that flap dozens of times per day, or the force of the wind on the larger door. The material looks identical to the smaller door we had and doesn't hold up to large dogs. The first time I used the large plastic cover to block it on a windy day I didn't notice the Cane Corso was still outside. Not a problem, she hit it at full puppy speed knocking the cover clear across the room, popping several of the screws out of the frame. She was very excited with her accomplishment.I can't imagine a home without a dog door. They use it night and day, sometimes just to stick their head out to check the weather. We had a large dog door until our new pup had trouble squeezing through. The large door worked very well. I saved it for the future. We replaced the flap every 2-3 years and needed to make a better attachment system due to the flaps tearing near the screws and plastic attachments breaking.

Easy to install and it is durable. I live in the countryside and get really strong winds and it will blow open a bit under high winds but I just slide the cover in and it locks it down.

We went through 3 doggie doors until we found this one. It closes without leaving gaps (we have mosquitoes) and our really old dog easily got used to using it. My husband didn’t have trouble installing it into our metal back door. I highly recommend this door!

We have had several versions of dog doors over the years. This one tops all the others. Past doors have flapped open in strong wind, not pleasant in the winter! This door stays put, and we've had strong winds this past winter and spring and no cold drafts in the house! We also got a new puppy (1 year old, 50 lbs lab mix!). She has discovered that she LOVES running full tilt from the backyard, through a single flap door onto the porch, then 'bounding' through this door, into the house. This door has held up to this aggressive use better than I could have hoped! Between this sturdiness and wind resistance, I HIGHLY recommend this for anyone with an energetic pup.

Dog door arrived soon after ordering.Good for both of our dogs. One is and American bulldog and the other is miniature dachshund.Very happy with the quality and the 3 flap door to seal out the elements.