Great door! Easy to install! It was a little small for my XT Giant Dogloo that I am using for my 70lb tortoise, so I had to add a strip of plastic vinyl to the bottom so it would keep more warmth in for my big guy. Definitely does the job - even without the added vinyl! I have one happy and warm tortoise! Gave 4 stars only because it wasn't the perfect fit like I was hoping.

Easy to install. Thick material. Would have liked it to not have such a large gap around the perimeter.

Exactly what we needed! Attached perfectly to our dogloo!

So thanlful it had arrived when it did. My dog was definitely warmer because of the door flap.