Ideal Pet "FastFit" Pet Patio Doors - Adjustable Heights

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Ideal Pet "FastFit" Pet Patio Door — No Drills, Just Thrills!

Looking for a pet door solution that doesn't involve cutting holes in walls or doors? Got a sliding glass door with an aluminum frame that leads to the patio? Well, you're in luck! The Ideal Pet "FastFit" Pet Patio Door is exactly what you need.


What's so great about the Ideal Pet "FastFit" Pet Patio Door?

  • Sleek white finish: It looks great with any décor, adding a touch of elegance to your home.

  • Flexible and clear: The single flexible clear vinyl flap makes it easy for your pet to come and go while providing a clear view.

  • Safety first: The single pane clear tempered glass ensures durability and safety.

  • Weather-tight seal: Includes a weather strip to perfectly seal with your slider, keeping the elements out and your home comfortable.

  • Perfect for pets of all sizes: Whether you have a curious cat or a playful dog, this door is a great fit for your furry friends.

  • Customizable heights for the perfect fit:

    • Have a standard patio door (height 77-5/8" to 80-3/8")? Choose the Standard 80” option.
    • Have a shorter patio door (height 75" to 77-3/4")? Choose the Shorty™ 75” option.
  • Easy measuring: Check out the graphic below for a quick guide on measuring your space.


Why the Ideal Pet "FastFit" Pet Patio Door is a must-have:

  • No cutting walls or doors: Say goodbye to permanent alterations in your home.

  • Easy to install and remove: Perfect for renters or anyone who prefers a less permanent solution.

  • Stylish and practical: Not only does it look good, but it's also incredibly functional.

  • Peace of mind: Safety and comfort for your pet, without compromising on style and convenience.

  • Flexible for various door sizes: Whether you have a standard patio door or a shorter one, we've got you covered.


Transform your patio door into a gateway to adventure and watch your pet enjoy their newfound independence!



Standard 80" or Shorty 75"

Door SizeFlap SizeModel#Recommended WeightPet Door Rise*
Reg Cat Flap 6 1/4" x 6 1/4" PATCFW 2 - 12 Lbs. 4"
ChubbyKat 7 1/2" x 10 1/2" PATCKW 2 - 25 Lbs. 4"
Small 5" x 7" PATSW 2 - 12 Lbs. 2"
Medium 7" x 11 1/4" PATMW 13 - 35 Lbs. 4"
Extra Large 10 1/2" x 15" PATXLW 36 - 90 Lbs. 8"
Super Large 15" x 20" PATSLW 91 - 120 Lbs. 8"

*Pet door rise is the distance of the pet door from the floor.


Alum pet patio Door

Download PDF



Need help aligning your patio door with your new pet door?
It's easier than you think. This explains what's going on. And this is how you adjust your patio door roller.


Demo Video


Installation Video

Here's another installation video


Flap Replacement 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 pet door!

    Posted by Cindy Reath on 6th May 2024

    Grey pet door, got the XL as it is difficult to find in Canada. Had shipped or port Huron for pickup. Hundreds more for cost in Canada.

  • 5
    Sliding glass door insert

    Posted by Linton on 29th Jan 2024

    I have been buying doors and replacement parts from Ideal Pet Products for many, many years. Their products are great and so is their customer service. Simply the BEST!

  • 5
    Works Great

    Posted by Alan Bowen on 23rd Jul 2023

    Great product! We ordered the wrong style to fit our patio door. The company worked with us to return it and order the one we needed. Works perfect!

  • 4
    Works well

    Posted by Gloria Golson on 7th Jul 2023

    Works well but it has to be removed when locking sliding doors.

  • 2
    Check return policy before purchase

    Posted by Katie on 17th Jun 2023

    I tried the standard size, too big, but from Home Depot so I could return. I bought shorty on the company website and it is too small. I rigged it to work for the summer but the seal is terrible and I will have to take it out for winter. Sadly I didn't read to return policy, not worth the cost to return.

  • 5
    great product

    Posted by Barbara on 19th Jan 2023

    Easy to install, and looks fine! My dog figured out how to use it in two minutes. I had inherited a similar door panel with a smaller flap, also made by Ideal Pet, from the previous homeowner- my smaller dog used that one for many years. These products are built to last and affordable too, highly recommend! Also: my dog tried to chew the clear flap, did some damage, then gave up. It still works okay though. I like knowing that in the future I can order a replacement flap, which I plan to do once she gets a little older.

  • 5
    Our Second Cat Door

    Posted by Pat on 29th Aug 2022

    This is our second Ideal Pet Products cat door. The first we purchased 6 years ago to see if it would work in our situation. Well it worked and worked so well that when we needed another door there was no question as to which door to buy. Economical, easy to install, easy to train the pets to use all make it a value purchase.

  • 5
    cat door for the cat house!!!

    Posted by gail horton on 25th Jul 2022

    i have a cat house off my bedroom. i purchased the catdoor for the sliding glass, worked perfect, except the catdoor made to much noise at night. so i removed the door flap, all is perfect now.

  • 5
    Great pet door

    Posted by april on 30th Apr 2022

    I just recently accepted a kitty into my home. She was abandoned, but wanted to have access to lanai. So a friend of mine had purchased this pet door so she recommended it to me. Long story short, I purchased it. It came all the way from California to Florida in a week's time. So I am thinking fast delivery! Easy to put in the sliding door and my cat got use to it almost immediately. So far holding up well. Would recommend.

  • 4
    Basically happy with it. It works!

    Posted by Daryl Thompson on 21st Feb 2022

    The door arrived packaged well. It was easy to install. My only issue has to do with the weather stripping. I know it can't be ease to design something that can fit all windows, however, there should be a better way to seal the gaps.