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Ideal Pet Aluminum Sash Window Pet Door – FREE SHIPPING! (Continental U.S. Only)


Product Description

Keep your Perfect Pet happy and safe with pet doors specially designed for aluminum sash windows.

Pet Door Features Include:

    • High quality white finish aluminum construction
    • Installs easily into most styles of aluminum sash windows
    • 3 aluminum sash window sizes available: Adjustable width from: 23" to 28" (23) , 27" to 32" (27) and 33” to 38” (33)

      Cat Flap = 10-3/4"

      Chubby Kat = 15-1/8"

      Small = 12-1/2"

      Medium = 16-5/8"

      Extra Large = 20-3/8"



23" Model

Pet DoorsModel #Flap SizeRecommended Weight
Cat Flap™ P23SWDCF 6-1/4"x6-1/4" 2 to 12 Lbs.
ChubbyKat™ P23SWDCK 7-1/2"x10-1/2" 2 to 25 Lbs.
Small P23SWDS 5"x7" 2 to 12 Lbs.
Medium P23SWDM 7"x11-1/4" 13 to 35 Lbs.

27" Model

Pet DoorModel #Flap SizeRecommended Weight
Cat Flap™ P27SWDCF 6-1/4"x6-1/4" 2 to 12 Lbs.
ChubbyKat™ P27SWDCK 7-1/2"x10-1/2" 2 to 25 Lbs.
Small P27SWDS 5"x7" 2 to 12 Lbs.
Medium P27SWDM 7"x11-1/4" 13 to 35 Lbs.
Extra Large P27SWDXL 10-1/2"x15" 36 to 90 Lbs.

33" Model

Pet DoorModel #Flap SizeRecommended Weight
Cat Flap™ P33SWDCF 6-1/4"x6-1/4" 2 to 12 Lbs.
ChubbyKat™ P33SWDCK 7-1/2"x10-1/2" 2 to 25 Lbs.
Small P33SWDS 5"x7" 2 to 12 Lbs.
Medium P33SWDM 7"x11-1/4" 13 to 35 Lbs.
Extra Large P33SWDXL 10-1/2"x15" 36 to 90 Lbs.

Demo Video

Installation Video



How to Measure Your Ideal Pet

To determine the correct size door simply measure the width (A) and height (B) of your pet. 

(A) Measure the widest point of your pets shoulder 

(B) Measure from the top of your pets back (just behind his head) to the bottom of chest.

Alum pet patio Door
vinyl pet patio Door

Product Reviews

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Showing reviews 1-10 of 20 | Next

  1. Ideal Pet - ChubbyKat Door Window Insert 5 Star Review

    Posted by on 18th Oct 2022

    This product is exactly as advertised. My husband was able to install the window easily - we got the 23" insert with the ChubbyKat door - it took him less than 5 minutes. Our cat is a Maine Coon, approximately 15 pounds so the ChubbyKat door was a perfect size for him. We already have a cat door going into the garage so Rex can access his litterbox and it took him about one week to get used to the window door, which provides him access to the lanai out back.

    It's a great product with great value! We are so glad we no longer have to jump up and down to let Rex in and out of the patio door!

  2. Fast delivery, easy installation 5 Star Review

    Posted by on 15th Oct 2022

    I ordered the door on Wednesday, and it was delivered on Saturday morning (I'm in central California). Easy, no-tool installation, and the foam bumper seal and vinyl draft seal are included. The only additional item I need are sash locks to hold the window in place. Now to teach the cat how to use it!

    I had a similar door years ago, from another manufacturer, and this one seems much better.

  3. Easy 5 Star Review

    Posted by on 3rd Jul 2022

    The pet door was easy to order online, delivered on time, and easy to install. Kudos for a well-designed product and a very usable website.

  4. Cat flap 5 Star Review

    Posted by on 23rd Apr 2022

    This product is well made, easy to install and my cats use it. Well, one of them does. The other is still trying to figure it out. It didn’t quite fit in the window track but it was easy to bend the metal a bit to get a snug fit. This company has excellent customer service too, should you need it. I’m glad I purchased it and so are my cats.

  5. Just as described 4 Star Review

    Posted by on 3rd Jan 2022

    The pet door is perfect for allowing our cat the freedom to roam into and out of our screened-in porch. The cat pushes the door open with ease and the window stays in place!

  6. Easy to install 5 Star Review

    Posted by on 5th Dec 2021

    The installation of the window cat door went so smoothly. The cats were curious and caught on quickly. We did not have to alter our door.

  7. Great Doggie Door 5 Star Review

    Posted by on 13th Nov 2021

    This is the easiest dog door to install. It took less than 30 minutes. I only suggest you purchase some window locks to keep the window from being opened after installing. But again this is the perfect dog door that I’m using at my lake house.

  8. Innovation at its finest 5 Star Review

    Posted by on 25th Sep 2021

    Because the door that I have has glass and I couldn’t really cut a hole into it that was half in the glass and half in the wood, I thought that I’d either have to drop several hundreds of dollars on a entirely new door or rent a power tool to cut into our brick and through an interior wall if I wanted to have a doggie door for my dogs, but because I found this product, I was able to save so so so much money. Installation was super simple, it won’t affect the value of my home when it comes time to sell it, and we could even take it with us when we travel with our dogs. I want to personally thank whoever thought up and designed this product because it’s fantastic.

  9. Perfect fit, perfect service 5 Star Review

    Posted by on 26th Jul 2021

    We needed to install a pet door in an unusual location in our house. Ideal Pet Products helped us identify the right product line and size for our particular need. Friendly customer service and fast shipping were icing on the cake; the door itself was perfect, installation simple, and all our critters love it!

  10. Great product 5 Star Review

    Posted by on 7th Jun 2021

    We purchased the 33" model with the medium door for our cats to freely go out onto our newly screened-in patio. The installation was easy and quick. They were going in and out on their own by day 3. We opted for the vinyl door over the cat door for what seemed like better security, and I'm glad we made that decision.
    The craftsmanship is really better than I could have expected. The door blends right into our window and looks really great from our living room. Wonderful company, wonderful product - will recommend to anyone and everyone that needs a pet door. Favorite purchase of 2021 so far!

Showing reviews 1-10 of 20 | Next