Perfect Pet Wall Kit for All Weather Dog Door, Extra Large, for 4.75" to 7.25" Wall Thickness

This wall kit (paired with the Perfect Pet door, which incidentally, IS NOT INCLUDED), is awesome. I had some trouble getting everything here initially due to my own failure to read everything correctly. Here's how to order this kit:1. Decide on the size of the opening you need in your wall (typically exterior, but it would work if for some reason you wanted an interior wall too)2. Match that size up with the size of one of the Perfect Pet pet doors--Xsmall, Small, Medium, Large, XLarge.3. When you pick the door, order the door, and somewhere in the product description, it should tell you which wall kit it pairs with--A.B,C, etc.4. Order the corresponding wall kit.Things I like about this kit:1. It was REALLY easy to install (once I figured out what I was doing ordering parts).2. It does form a really weather-tight seal when paired with the all-weather Perfect Pet door.3. Even my slightly mentally-challenged cat (I have 5) and my very timid cat seemed to have no problem getting used to going through the little tunnel in the wall formed by the wall extender kit. (We were worried that they might freak out a little about this, but after an hour, they were fine.)Recommendation for acclimating cats:When you first need the cats to get used to the door, start out without the flap of the door itself. Then once they get accustomed to going through the flap-less tunnel in the wall, add first one flap, then the other. We're still in the one-flap stage, but it seems to be going well so far and in South Carolina summer, it's not costing a fortune in lost AC.UPDATE - Several months have gone by, and the product is still working well, completely intact, and the cats still use it with no trouble at all. No complaints.

Perfect Fit and looks great! Definitely, a great purchase and it saved me time trying to chase down what I needed in the store.

My son put up in his house and loves it, perfect

Alright, kind of a pain to snap together but ultimately not so bad. Fits the dog door but definitely isn't snug, which would be ideal. However instructions clearly say to caulk into place to avoid movement.Next time I would probably just make an insert myself and save money but it does the job.

We installed this door in late October. I was reluctant because of the reviews but after some work we got it installed and it is amazingly awesome that my dogs can come and go without me opening the main door. I expect I have already saved quit a bit in heating costs. The double flaps keep the cold out and it seals very well. I have never felt a draft coming in around it. even with this arctic blast of single digit weather for 2 weeks straight it is continuing to open and close and seals up tight. I have had no cold air coming in around it. Family and friends have all commented on how effective and efficient it is. If we had put one in the door with only a single flap it would let cold air in every time they used it! So glad we went with in the wall door!! Thank you for an amazing product!!

This pet door insert makes fitting through our wall easy, neat, and clean!

Double flap door : 5 starsExtension tunnel: 2 starsThe Door is great. High quality plastic unit — well made and attractive. The clear plastic vinyl flaps are thick and high quality. Because they’re flexible, your pet cannot get pinched/trapped by the door, which actually happened one time to my cat with a different pet door. The flaps are also easy to remove and replace if needed. The threaded bolts are also high quality.Now, the bad news:The tunnel extension product is poorly conceived, designed and manufactured: Here’s why:1. It’s not a telescoping unit. Instead, the tunnel is in 6 pieces which are friction fit together (more on this in a moment). If your wall is maximum thickness for this tunnel, you leave all 6 pieces intact. If your wall cavity is somewhat narrower, you must snap off an inch (or two) from each of the six pieces before assembling them.2. The left-right *width of the tunnel is about 1/2” narrower than the cavity it fills, so there is unnecessary “play”. The gap is noticeable — and also lets cold air in. I hot glued the tunnel to one side, and bought some weatherstripping to take up the gap on the other side. Not ideal.3. Be warned: if your walls are not at the maximum thickness for this product, you will need to hacksaw the long threaded bolts, then de-burr the ends in order to get them to thread properly. The instructions actually tell you this. The better solution would be to ship this product with three different lengths of bolts, so customers are not asked to cut and deburr bolts themselves.

Sets up and is easy to install. Unless you cut the hole to big like I did and it won’t sit very well. Nothing some filler can’t fix

Came in time and my dogs use it, I have had windy days and seems to hold. Have not used through a winter yet

My dog goes thur & comes back. It's a miracle of modern day engineering!

excellent solid product

Easy install

GREAT PRODUCT INSTALL EASY