Endura FlapPet Door for Doors Single Flap | Extra Insulated & Cold Weather Dog Door | Aluminum Pet Door | Indoor or Outdoor | Easy to Install | Small, Medium, Large, Extra Large | White, Tan, Black

This has a better magnetic hold than any other flap I've come across and being 'double skinned' and still clear'ish, the dog goes through it with no problems. It's narrower than my old large dog door and much more secure because of this. The window guy fitted it beautifully into the double glazed bi-fold door. The dog is using it without any problems. Result. Worth every penny as certainly not draughty like any standard flap available on the UK market. Worth the extra money getting it from the US - if you have it.

We had a dog-flap made by the market-leading manufacturer and so I speak from experience when I say that the Endura eclipses the old one in every respect. OK, it is a lot more expensive but I believe this is money well spent. The Endura was easier to fit (lots), much more substantially built and importantly does NOT blow open in high winds (which we get regularly here on the Isle of Skye).As you'll see from the pic, we had to install it in the hole left by the previous dog flap so the flap is not in the most aesthetically pleasing situation, but on a pristine door it would look very smart.Thoroughly recommended by me AND the dog!

Nice product. The template was very easy to follow for the hole in the door, but what they don't mention is that if you have a thin door (mine went in the bottom panel) you need to cut down the dog flap to make it thinner. I didn't bother as it looks to be aluminium - will get some packing for a really tight fit, which will also make the security door easier to slide in and out. Measurements are all in inches - guess that's fine if you're over 60 but mm would be helpful! The dog seems to have got the hang of it straight away - it's very windy today and the flap stays in place. I bought the medium for our beagle.

Very sturdy. No draughts. Good quality heavy frame and thick flexible flap. I have the XL size for my two akitas and they use it quite happily. It closes well behind them due to good quality magnets. Would recommend.

Dog goes in and out of this all day. It's his little gateway to narnia I think. Nice and smooth and stays sealed in the wind, which we certainly have a lot of near the coast

Sturdy, weatherproof- we had it now for a goof few months! Very satisfied!

Great product for labs.

This costs more than many of the others, but the quality and robustness quickly becomes clear when fitting and using. It's simply a quality item and as such is great value. I only wish they did one with an electronic lock that works of the dogs chip, that would be ace.