Ideal Pet Aluminum Sash Window Pet Door

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The Ideal Pet Aluminum Sash Window Pet Door

This pet door is specifically tailored for aluminum sash windows, blending functionality with style – the perfect addition to keep your beloved pet both happy and safe.


Why this pet door for windows?

Elegant white aluminum finish: Crafted with high-quality materials, it's not just durable but also adds a touch of elegance to your window.


Effortless installation

Designed for easy integration, it fits seamlessly into most styles of aluminum sash windows.


A perfect fit

Step 1, choose your window width:

  • 23" to 28"
  • 27" to 32"
  • 33” to 38”

Step 2, choose your flap size:

  • Cat Flap: ideal for your feline friends (2 to 12 Lbs.)
  • Chubby Kat: a perfect size for larger cats (2 to 25 Lbs.)
  • Small: suitable for smaller dog breeds (2 to 12 Lbs.)
  • Medium: designed for medium-sized dogs (13 to 35 Lbs.)
  • Extra Large: spacious enough for larger dog breeds (36 to 90 Lbs.)





23" Model

Pet DoorsModel #Flap SizeRecommended WeightWindow Height
Cat Flap™ P23SWDCF 6-1/4"x6-1/4" 2 to 12 Lbs. 10-3/4"
ChubbyKat™ P23SWDCK 7-1/2"x10-1/2" 2 to 25 Lbs. 15-1/8"
Small P23SWDS 5"x7" 2 to 12 Lbs.


Medium P23SWDM 7"x11-1/4" 13 to 35 Lbs.


27" Model

Pet DoorModel #Flap SizeRecommended WeightWindow Height
Cat Flap™ P27SWDCF 6-1/4"x6-1/4" 2 to 12 Lbs. 10-3/4"
ChubbyKat™ P27SWDCK 7-1/2"x10-1/2" 2 to 25 Lbs. 15-1/8"
Small P27SWDS 5"x7" 2 to 12 Lbs. 12-1/2"
Medium P27SWDM 7"x11-1/4" 13 to 35 Lbs. 16-5/8"
Extra Large P27SWDXL 10-1/2"x15" 36 to 90 Lbs. 20-3/8"

33" Model

Pet DoorModel #Flap SizeRecommended WeightWindow Height
Cat Flap™ P33SWDCF 6-1/4"x6-1/4" 2 to 12 Lbs. 10-3/4"
ChubbyKat™ P33SWDCK 7-1/2"x10-1/2" 2 to 25 Lbs. 15-1/8"
Small P33SWDS 5"x7" 2 to 12 Lbs. 12-1/2"
Medium P33SWDM 7"x11-1/4" 13 to 35 Lbs. 16-5/8"
Extra Large P33SWDXL 10-1/2"x15" 36 to 90 Lbs. 20-3/8"

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 pet's shoulder.

(B) Measure from the top of your pet's back (just behind their head) to the bottom of chest.

Pet door models have different size openings. Just make sure your new pet door's opening is both wider and taller than your pet's measurements to ensure they can comfortably pass through.

  • 5
    Great Doggie Door

    Posted by Julius Sutton 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.

  • 5
    Innovation at its finest

    Posted by Jaden Woods 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.

  • 5
    Perfect fit, perfect service

    Posted by Duncan Beevers 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!

  • 5
    Great product

    Posted by Brittany Basden 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!

  • 5
    Great Kitty Door

    Posted by Unknown on 5th Jun 2021

    Great kitty door. Very easy to install. Very sturdy and good material. I shopped around and this was a good buy. My cats freely go onto the screened porch.

  • 5
    Exactly what we needed!

    Posted by Leslie on 28th May 2021

    We ordered this to enable our cats to get out to a new catio. It’s very sturdy, and the instructions were very clear. Now if only the cats would learn to push their way through the swinging door … (This will come; we’ve had it in just a couple of days.)

  • 5
    Best window door out there!

    Posted by Rebecca on 25th Apr 2021

    I really didn’t think I would find a sturdy window door. They just aren’t available and certainly aren’t made as well as this one! It locks in, locks shut and looks so nice with the REAL windows on either sides of the doors. Great purchase! Highly recommended!

  • 5
    Wonderful Small Pet Door

    Posted by Warren on 11th Jul 2020

    Works amazingly for our kitty and chihuahua. It’s fits our window great! Looks very nice and modern.

  • 5
    Terrific solution

    Posted by Unknown on 29th Jun 2020

    The small sash window cat door we bought is a terrific solution for our cat(who is quite petite). She loves hopping in and out onto our upstairs deck ....which keeps her out of street trouble. If I have one suggestion it would be to beef-up the red open-close click switch. Otherwise this is a tremendous well-made window for a lucky cat.

  • 4
    Nice looking

    Posted by Linda on 19th May 2020

    The chubby cat sash window pet door installs securely in place. The flap is rigid and has a locking mechanism on the inside that turns to lock to preferences. Somehow when fully locked, my cat can still get out but can’t get back in. The flap got all scratched up on the outside from being locked out. Sometimes the door doesn’t fully shut to seal either.I still like it though and just don’t use the lock since I have an ambitious cat. I would prefer the flexible flap with a separate cover to lock—if I had to do it over again. Ideal Pet Products mailed me a replacement lock, but I haven’t replaced it yet since the original lock isn’t broken. Both my cats found it easy to use and like having their own door to their patio.