I have decided to get a dog door for my corgi, as running up and down stairs and having to wait for her to do her business or leaving the door open so she can come in when she is ready is getting annoying. But i know nothing about dog doors, wondering if anyone can name some good Canadian winter proof models or have tips and pointers. My main concern is efficiency as i living in Canada where it can get extremely cold and lots of snow, we also spend most of our time in the basement so the last thing we need is a cheap dog door with a flap that will not fully close, or one that allows a big draft. I live in a bungalow the back entrance has two sets of original doors (house built in 1964) dog door will be in the outer door it is a wood weather door, top part has large single pane window. and bottom has recessed panels (similar to picture attached ). I also don't want to spend to much $200 max but would prefer to spend around $100. would be willing to spend more for electronic one. But i also don't want one that is to big (i find alot come in large or small in the store, to small for corgi or WAY to big. Product sold or shipping available to Canada would be very helpful as well lol. I hate when i find something i like but site/supplier does not ship to Canada.