Bought staywell medium dog flap. Very Prompt delivery. Had it professionally fitted by window and door firm locally, and left it to set overnight as had it sealed with polyfiller. The next day our 20 month old cockerpoo was immediately interested. I threw sausage bits out and he immediately jumped through to retrieve them. By the end of day two (today) he is confident with his new door, and dragging his blankey through it. Flap looks neat and sits happily in the door panel. It seems good quality, nice and quiet when used and very minimal drafts. Also a bonus that replacement flaps are available should we ever need one.