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)
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SASH WINDOW DOOR HEIGHTS:
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 Doors | Model # | Flap Size | Recommended Weight |
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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 Door | Model # | Flap Size | Recommended 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 Door | Model # | Flap Size | Recommended 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

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.
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Great product
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!
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Great Kitty Door
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.
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Exactly what we needed!
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.)
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Best window door out there!
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!
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Wonderful Small Pet Door
Works amazingly for our kitty and chihuahua. It’s fits our window great! Looks very nice and modern.
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Terrific solution
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.
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Nice looking
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.
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Easy and my cat loves it
I was worried about sizing at first since I didn't know if I should count it as the whole window, or just the inside, or where to measure... ended up watching their how-to videos and it made me more certain of where I needed to measure. Check those out if you are confused. It works great, my cat got used to it very quickly and now enjoys the outdoors whenever he wants. I will say with a window one, make sure there is a platform on each side for the cat otherwise they won't be able to use it.
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Outstanding product
Beautifully engineered product. Probably took longer to open the box than to install it. Perfect fit. Highly recommended.
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Chubby Kat door
Easy to install, there is a slight air gap above the swing door. In the smaller door, this is not present, there is a bar across the gap. Cat is happy.