Family owned & operated in the U.S.A. We donate to animal rescue for every door sold.


 Cat Flap Fever Industries

We hope our reviews are helpful. We think we have the Best Customers On Earth and we want to pay it forward by providing you with not only a Great Product but Exceptional Customer Service. We would love to earn your business!

We also wanted to let you know that we make a donation to Animal Welfare and Rescue for every sale so thank you for helping us help animals in need.  

The Original and simply the best Custom Cat Door for the Window with Locking Flap. Our standard 6"x6" flap is included and we also offer a larger 8"x9" size for our husky furry friends as well as Microchip.   

Based on 482 reviews
Very pleased

Quality product…cats are using already to go out onto screened porch! Sent quickly…great product


wow, only regret I have is not having found this company sooner. Fast, efficient and excellent quality. definitely recommend!!

54” horizontal window cat door

The directions were super easy to follow to get the right measurements for the window. The insert fits perfectly like a glove. My cats use it with no issues. No more windows left open for them to come and go. It looks good, fits tight. I wish though they could have the same fit for the larger windows with the plexiglass, but my frames are white with white blinds so you really don’t notice too much. Very friendly staff, I had a question and sent an email and I received a reply very quick. I highly recommend this company for any window doors anyone may need. I would use again.

Perfect Solution

Our cat flap window insert has been a perfect solution. We have three cats and one decided she just HAS to be outside. The meowing was unbearable! We set up a catio and got our cat flap insert - no more begging to go outside! Cats are safe and humans are peaceful :) Cat flap came quickly (over a week early when using the website estimates for shipping times) and cost less then anything I could find on Amazon or other pet store sites. And it’s custom made! No unsightly slider panels! Everyone loves the product- human and fur babies!! Highly recommend this company to anyone looking to expand their fur family’s domain.

Great product

Custom cut plexiglass insert fits puuuuuurrrrrfectly! Highly recommend this product

Cat Flap Fever Industries
Emily Giesemann
Fits perfectly

I couldn’t be happier! The cat door fits perfectly in the window. Doesn’t let hot air in (we live in louisiana) and the cat uses it instead of waking me up!

Love it!

Fits perfect! Very happy.

Very happy!!

We are thrilled with our cat flap fever cat door. The fit is perfect and it looks amazing.

Love it

It's perfect. Sweet Pea figured it out pretty quickly 🙂 and it was easy to install

Cat Flap Fever Industries
L L Jones. Very pleased promptly, Sturdy, fits snuggly, and is unobtrusive
Very pleased

L L Jones. Very pleased Shipped promptly, Sturdy, fits snuggly, and is unobtrusive. Cat learned how to use it as soon as demonstrated to her.

I want to know more

I want to know more

I want to know more

I want to know more

Works great

Was just a hair too big but it fit in another window so it's all good. With a bit of coarse sandpaper I might even be able to make it fit in the intended spot. It works great and looks good, but I might need smarter cats. If it's taped in the open position they will go out; Cat Too will come back in, no problem, but Cat One stands at the door meowing to be let back in. Apparently he is under the impression that it's a one-way portal. We'll keep working on it. I'm confident that eventually they'll both get the hang of going both in and out, even when the flap is closed!

Great service and quality!

We bought and put together a "Catio" for our kitty's to go outside whenever they want. We had to leave a window open for them to access it and it was letting in bugs and heat so we went searching for a small cat door that we could install in the window. We found CFF online, found the cat door that suits us, submitted our measurements and ordered. Super easy!! Our order arrived in about 5-7 days. The cat door is high quality. Has a magnetic stopper so the flap stays closed when they're not going through and strong enough so the wind won't push it open. Keeps the bugs and heat outside. I thought we had an issue with the size so I reached out to CFF via text and they were very fast to respond. They made sure the measurements were correct, which they were and gave me some tips on how to install. It was user error lol! I figured out how to install the door and it's PERFECT! They cats have gotten used to going in and out and they love the freedom! Thank you again for the great service and product!

Cat Flap Fever Industries
Nelson Del Valle Jr
Very happy with my experience!

This family owned business has better customer service and understanding than regular big brand companies and not to mention the great quality in the products they sell! Shipping took about a week and I received exactly what I was expecting and it's perfect! Would highly recommend this business to anyone looking to spoil their furry friend for any given occasion!

Thank you!

Great product and experience all around! I highly recommend this family business. I just have to convince my furry family member(Henry) to use his new door. He's a little timid, and unsure but his freedom to his porch, and back in
awaits his efforts!


Very well made and communication is A+. Fast shipping and good communication on shipping process.


My cat’s love it and we don’t have to change the kitty litter as much!

Cat Flap Fever Industries
Elizabeth Torina
Excellent product

I ordered the cat flap in plexiglass and it has exceeded my expectations. I ordered it for a window in my business so our salon cats could travel between the business and atrium. The cats adapted to the window quickly, it fits perfectly and is weathertight. I highly recommend this product!

Cat Flap Fever Industries
Brigitte Fuller
Just right

Window was easy to install and looks great!

Very nice product.

I am very pleased with the build and overall quality of the cat flap. It fits snugly to the window and my cats learnt fast how to use it.

Cat Flap Fever Industries
Leigh Beamesderfer
Happy customer

We have a screened in porch which our cat, Cali, enjoys sitting on her perch watching the wildlife in our back yard. But we got tired of getting up and down to let her in/out the door, so we purchased the CAT FLAP in hopes she’d use it. A bit of a slow learner, she finally got the hang of it after 3 days and after placing a “step” on either side of the window, and we’ve been thrilled with her independence of going in and out on her own. Cat Flap fit nicely in our window, has a nice soft magnetic or some thing that keeps the door securely in place from wind, but easily opens with a nudge from Cali. Very happy with the customer service, the product, the ease of installation, and the success of our cat using it. Highly recommend it.

Leigh B.

Worked perfectly...looks great!

It only took our new young cat a day to figure out how to use his new door. It fits perfectly and looks much better than I expected. The plexiglass looks just like real glass. I'm very pleased with my purchase. Money well spent and I love to be able to support a local business!

Perfect solution for my kit cats

Put this in a window to my outdoor catio, fits perfectly. It allows my cats to go in and out in a safe space.
Love the lock on the cat door. So happy I found cat flap, has made my cats so happy and me too.

Game Changer

Love this product! I was so sick of letting my cat in and out all the time. It took her a week or so to warm up to the flap but now she's constantly coming in and out. We're both happy. Keeps the cold out of my Midwestern home. I had to remove the weather stripping on the sides to make it fit because it was truly cut to size and there's no give, but then it slid in. Love that I can lock it when I want. Highly recommend!