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Cat Door Window Insert Plexiglas 1/4"

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1/4" Plexiglas Base with locking flap. Our standard plexiglas base is 12" cut to the width or height of your window. We recommend plexiglas for base sizes up to 48" in order to protect the integrity and stability of the door. For doors longer than 48", PVC is the best option.  

Our standard 6"x 6" locking flap is included in the price and it accommodates most cats up to 15 lbs. Other flap choices include Cat Mate Large 4-Way locking flap for our larger furry friends as well a Microchip Cat Flap. You can select to upgrade using drop a down option. Let us know if you have a flap choice not listed and we'll accommodate the request to the very best of our ability.  

🐱 Pet Door For The Window - Custom cut to sit in your window tracks. Installs in minutes. No tools required. Removable.

💜 We Donate to animal welfare & rescue around the world for each door sold.

❤️ Family Owned & Operated. 

👌 Worry-Free Ordering: we send measuring instructions in your confirmation email. Just send us your final measurements and we'll get started right away! Make sure to check your SPAM folder.  

Need help? Text or Call (706) 619-1800 or email at
(We LOVE communicating with our customers). Please see our Measurement Tutorial for assistance. Please use email for weekend correspondence.  


We provide free UPS ground shipping anywhere in the continental United States and $34.99 for Hawaii Alaska and Canada. Our turnaround time is approximately 3 to 5 days.

How to Install

Customer Reviews

Based on 76 reviews
Steven Jerman
It was a good solution to my problem.

I wanted a cat door but both front and back doors have a storm door. I found this and thought I'd give it a try. It took a couple weeks around the holidays, they double checked the measurements. Well made with nice details. Packaging was excellent. It's about five feet off the ground, It took me a couple of weeks to train the cat, but he was jumping up on the storm door so I figured it would works. Now he has it down.

Thank you for taking the time to leave a review for our Cat Door Window Insert. We are happy to hear that it was a good solution for your problem. We understand the challenge of having a storm door and wanting a cat door, and we are glad our product met your needs. We take pride in our attention to detail and quality, so we are pleased to hear that you found it well-made. Happy to hear that your cat has now mastered using the door. Thank you for supporting small business.

Kathy Miller

Litter boxes are messy and awful but they were necessary so my cats would have access at night. With their new Cat Flap door, they are able to come and go as they please! They love it and I love it!!! Customer Service was amazing as well as your work!!! Thank you for thinking of our fur babies!!!

Hi Kathy!

Thank you so much for your kind words and for choosing our Cat Door Window Insert for your fur babies. We're thrilled to hear that it's been a 'perfection' for you and your cats! Our goal is to make life easier for both you and your furry friends, so we're glad to hear that the Cat Flap door has been a hit. And of course, we always strive to provide excellent customer service. Thank you for your support and for giving your cats the freedom they deserve. Have a wonderful day!

Works great!

Ordered one so our cats can have access to their outside window box. Works great and seals up well with surprisingly little heat loss! Very well crafted and easy to install. This company’s customer service and help when ordering was second to none! Thanks so much!

Hi there! We are thrilled to hear that our Cat Door Window Insert Plexiglas is working great for your cats' outside window box! We take pride in the craftsmanship of our products and are happy to know that it seals well and minimizes heat loss. We are also glad to hear that our customer service team was able to assist you during your ordering process. Thank you for your kind words and for choosing our product. Happy cat adventures!

Gordon Rode
By and Far the Best Cat Door Ever!

We ordered a cat door for our cat 7 years ago from this company and it lasted that long. It was time for a new cat door, and it is even better than the first. It is solid with translucent plexiglass, so you still get lots of light through that window. A magnet on the door to keep it closed even when windy. A bigger opening for our bigger and older cat. It is just PERFECT. We would never go anywhere else!

Hi Gordon! My apologies for the delay in responding.

Thank you so much for your kind review! We're thrilled to hear that our Cat Door has been a long-lasting and reliable product for your furry friend. We're glad to know that our latest version has exceeded your expectations and that your cat is enjoying the bigger opening and magnet feature. We appreciate your loyalty and we're always here to provide the best products for your cat. Have a purr-fect day!


They are an awesome company that really puts out an amazing product that my cats love using!!