Ideal "Fast Fit" Sliding Glass Cat Doors

SKU# 01RI10

  • The best choice for a patio cat door on a budget
  • Clear, unbreakable polycarbonate flap fits even the biggest cats with 2 sizes available
  • Simple installation requires no tools, perfect for renters or vacation homes
  • Fits all sizes of sliding glass doors with custom extensions available using instructions below
  • PLEASE NOTE: This product ships directly from the manufacturer and may take 3-5 business days before it actually ships.

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Stock No: 01RI10

Availability: In stock

Price From: $209.99
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Price From: $209.99
Ideal "Fast Fit" Sliding Glass Cat Doors
Ideal Cat Flap Used in Ideal Patio Cat Door Regular Size

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  • The best choice for a patio cat door on a budget
  • Clear, unbreakable polycarbonate flap fits even the biggest cats with 2 sizes available
  • Simple installation requires no tools, perfect for renters or vacation homes
  • Fits all sizes of sliding glass doors with custom extensions available using instructions below
  • PLEASE NOTE: This product ships directly from the manufacturer and may take 3-5 business days before it actually ships.
Flap SizeFlap DimensionStep
Pet Height*
Stock No
Mfr No
Cat Flap6 1/4" w x 6 1/4" h4"10"8"


Large Cat Flap

7 1/2" w x 10 1/2" h4"12"12"-13 1/4"01RI09

*measured from the ground to the tallest point of their back 
The recommended pet width is generally 1-2" added to the width of the flap.

Still don't know which flap size to get? Here is a measurement guide to help you out

Height Adjustment Ranges

  • B- Shorty 75" - 77 3/4" (additional cost)
  • C- Regular 77 5/8" - 80 3/8"
  • E- Tall 93 3/4" - 96 1/2" (additional cost)

Custom Height Add-On Extension is Available  If your sliding glass door track is not accommodated by one of the stock adjustment  ranges, you can special order a height extension for either the Regular or Tall panels by clicking here. Be sure to read the Details tab carefully to see how to compute how tall you'll want the custom height estension to be (maximum is 14").

Caution If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution

Wondering how to measure your track? Review our Track Measuring Guide

Cat Flap Panel Pet Doors for Sliding Glass Doors

Relax. You don't have to let your cat through the sliding door anymore. Save your sanity! The Cat Flap Panel Pet Door completely eliminates your hassle once it's installed. Just set it up, and that's it. It literally only takes a few minutes to install, and your cat will be using it in no time.

Features include:

  • 4-Way locking feature
  • Available in a standard size and a Hefty Cat size
  • Fully weather stripped on both edges and 'draft stopper' included to stop any air leak between the stationary and sliding panels
  • Since this panel will not mate with an existing slider door lock, Ideal supplies a pin lock. This does require drilling holes, so if you're a renter and do not want to put holes in the slider, then we suggest using the old "broomstick in the track method" or a Charley Bar
  • Clear, "Cat Flap" style is easier for cats to push than some heavier flaps

If your patio door framing is vinyl, take a look at the Ideal VIP Series first. They're specifically designed for vinyl framed sliding glass doors


Calculate your extension by subtracting your current panel height from the height of your sliding door, then add 2-1/8" in order to get the correct height for the extension

Note The overall width of the Cat Flap Panel is 10" or 12". Be sure you'll have enough room left for you to walk out! Also, this product ships directly from the manufacturer and may take 3-5 business days before it actually ships


Customer Reviews

Set Direction
  • The insert for sliding glass door has worked out great. Fits in the doorway with no problem. Only thing is that the insulation strip that came with this product was not as good as it should have been. We needed to purchase different insulation stipping review by Thomas
    5 4 The insert for sliding glass door has worked out great. Fits in the doorway with no problem. Only thing is that the insulation strip that came with this product was not as good as it should have been. We needed to purchase different insulation stipping

    The insert for sliding glass door has worked out great (no tools needed). Fits in the doorway with no problem. Our animals figured out how to use it without much trouble Very pleased.

    (Posted on 11/2/2018)

  • Overpriced, you don’t get what you pay for review by Rachel
    5 2 Overpriced, you don’t get what you pay for

    I got the exact same door about five years ago for under $100. My new sliding doors are taller, that’s the only reason for my new purchase. The weather stripping you get with this is horrible, so I spent $280 on this and now I need to go buy good weather stripping. Not worth the price if you ask me!

    (Posted on 4/14/2018)

  • This is the answer I have been looking for! review by Emma
    5 5 This is the answer I have been looking for!

    I have been on the hunt for a cat door I can install without permanent changes to my rental home. I love that you can install and take this out easily. The 4-way lock is also a plus when I want to let my cat in at night but not go out again. I have been using this for a few months and there have been no problems!

    (Posted on 12/27/2017)

  • Great for the price review by Bobby
    5 4 Great for the price

    Works well so far. This door was within my budget and also very easy to install. It's a pretty standard cat flap, so my cat has no issues going through. The weather stripping for the panel wasn't as strong and air-tight as I wanted, but nothing a trip to my local hardware store can't fix. Overall, cheap and effective.

    (Posted on 12/2/2017)

  • Love the pet door review by scorpio68
    5 4 Love the pet door

    So far so good. The pet door fits real well in the patio door frame and the pet door part has a good seal all the way around the opening. The quality of the pet door is great but the materials supplied with it to make an air tight seal between the pet door and your patio sliding glass door did not work well at all so I had to buy other materials from Home Depot in order to make an air tight seal.

    (Posted on 2/25/2015)

  • Do your homework review by Verdi
    5 1 Do your homework

    Do your homework when purchasing this door. You can find the exact same doors at hardware stores that you can easily return to if you are dissatisfied. Our sliding glass door fell within the measurements of the door but the lip on the door prevented the door from going in. We had to then saw off part of the top of the door from the top to get it in. It still was a disaster. The door was not perfectly straight so it created a gap with the slider on the right side. The flap on the door is a piece of plastic that just bangs around as well. You'll know every time the cat goes in and out of the door. Another thing is if you have slider where the lock needs to lock into another piece instead of locking directly into the door you need to unscrew that metal piece in order for the door to sit flush against the inside wall of the slider. Otherwise you end up with yet another gap in door. The whole routine becomes time consuming. No matter what you will be losing heat or A/C in your home every time this door goes in. Not a good purchase and did not the meet the needs of our family.

    (Posted on 5/12/2014)

  • Great Door review by Al
    5 5 Great Door

    Really like this door, works the other reviews the weather strip is worthless... if you live somewhere with diverse weather i recommend that spray seal you see on TV, or even duck-tape on the outside should make a great seal.

    (Posted on 12/2/2013)

  • Excellent review by DD
    5 5 Excellent

    It was easy to install, glad that you offer a large version as our sliders are 93 inches which isn't standard, so measure first before you buy. The cats only took a few days to learn how to use it. It will cut down on our electric bill and now I can lock it securely instead of leaving the door cracked open for the kities. Only complaint would be that when the cats come in and out the flap is kind of loud in the middle of the night, but maybe it's just our cats who are very aggressive running in and out at night. Buy it, you won't be disappointed.

    (Posted on 9/1/2013)

  • great product review by mary
    5 4 great product

    our 6 cats love the cat door.... so do the raccoons !!! our only problem is the cats bringing frogs and lizards and dropping in living room alive !!! Coons we can chase...... But it is a great product and the cats enjoy the freedom to come and go as they please

    (Posted on 5/9/2013)

  • Great Product review by onejulia
    5 4 Great Product

    Installs in minutes. This cat door has saved my sanity. Weather stripping is useless but I have put duct tape around the door where it connects to the sliders and it works just as well to keep cold out and warm in. Heat/cold lost via this unit is very minimal and much less than what I lost standing at the front door of the house waiting for them to come in. I highly recommend.

    (Posted on 4/22/2013)

  • Perfect Solution. review by Ken
    5 5 Perfect Solution.

    This door worked exactly as advertised. We put it in temporarily when our daughter brings her cat over. It takes all of a minute to install. The product meets all our expectations.

    (Posted on 3/14/2013)

Weight 35.0000
Manufacturer Ideal Pet Products
Your Maximum Pet Size Cats, Large Cats, Small Dogs
Climate Suitability Temperate-3 Season
Sealing Value Average
Wind Resistance Average
House Locking Method Pin Lock
Frame Material Extruded Aluminum
Track Width Minimum 7/8"
Tools Required For Installation Yes for pin lock only
Insulation Value Average
Flap Material Polycarbonate
Flap Design Single, One Part , Rigid, Thin Flap
Flap Colors Clear
Flap Thickness 1/8"
Can Be Installed In Dual Pane Glass Sliding Glass Door, Single Pane Glass Sliding Glass Door
Dual or Single Pane Single Pane 1/8" Thick
“Draft Stopper” Included to Seal Stationary & Sliding Panel Overlap Yes
Warranty Period 1 year
Return Period 30 days
Manufacturer's Restocking Fee 0

Ideal Fast Fit Cat Doors

1. Locate the knobs near the top of the panel. These will adjust your panels’ height.

2. Release the spring loaded-top by turning knobs counter-clockwise. The height adjustment panel should fully extend upward.

2. Open your sliding glass/screen door.

3. Insert Fast Fit Cat Door with knobs facing inside your home. Place top of the panel into the top track of sliding glass door first, then lift up the bottom of panel onto the ridge in sliding glass door track.

4. Slide your panel insert against door jamb and make sure that top is fully extended evenly, not tilted to one side.

Note: Check to make sure the bottom of panel is sitting properly on the bottom track. Once you know the panel fits properly in your track, you can place the weather stripping on the side of the panel that will meet your slider.

5. Tighten knobs by hand, turning clockwise to lock Fast Fit Cat Door in place. Your panel should now be securely placed in your track!

Note: To permanently install your panel, you can screw through the aluminum that protrude on the existing frame of your door. Install two screws in the top and side by the bottom of door. Do not put any screws into the frame by the glass as this could break the glass.

Click below to expand:

The ideal sliding glass cat door flap is smaller and rigid like regular cat flaps, but the panel is the same.

You can order one size down from what you need height wise and get an Ideal Fast Fit height extension separately.

The cat door sliding door model has a rigid polycarbonate flap instead of the flexible vinyl.

If your cat cannot fit through the large cat flap, then we would suggest ordering a regular Ideal "Fast Fit" panel with larger flap openings

There is a manual locking mechanism on the door that can be turned when you don't want the door in use.

The door comes with a pin lock (that needs tools to be installed), or you can purchase a Charley Bar

The ideal fast fit sliding cat door is best used in moderate climates.

Yes, it is 100% clear.

We recommend the regular Ideal Fast Fit for dogs.

Unfortunately, the step over cannot be customized for this panel, but you can look into a wooden block step or a ramp to make it easier for your cat to get through.

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One Year Warranty And Disclaimer

The new and revised warranty that follows this disclaimer supersedes any and all previous warranties of whatever nature or description, whether express, implied or set by law. Any unexpired warranties shall now be governed by the terms of the new warranty for the duration of the existing warranty’s unexpired term.
Ideal’s pet doors are very durable and with the proper care will provide many years of service for you and your pet. Thank you for selecting Ideal for your pet door. However, please be aware the pet doors are not waterproof against inclement weather or any excessive water exposure. The one year warranty set forth below applies to Ideal’s pet door(s). 
This product has a One Year Warranty from the date of the purchase of the product to be free of manufacturer’s defects in workmanship and materials. This express One Year Warranty is limited only to the original purchaser of the product and is non-transferable. Satisfactory proof of purchase must be provided to the manufacturer for this one year warranty to apply.  In that case, the manufacturer will replace at no charge to the purchaser the defective part(s). No refunds will be provided to the purchaser. No service contract is being provided under this One Year Warranty. Proof of purchase so that the One Year Warranty may be honored must be made to:
Ideal Pet Products, Inc.
24735 Avenue Rockefeller
Valencia, California, USA 91355
Attention: Warranty Department
(661) 294-2266 / 1-877-IDEALPET (433-2573)
Any and all implied warranties are expressly disclaimed and of no force or effect. These warranties include, but are not limited to, the implied warranties of merchantability, implied fitness for any intended purpose, and any warranties under the California Song-Beverly Consumer Act.  
This One Year Warranty is void if damage is due to improper installation, intentional misuse or abuse, repairs by anyone other than the manufacturer, the failure to follow manufacturer’s instructions, or if the product is being used for commercial purposes. Purchaser assumes all risks and liabilities for the misuse or abuse of the product, the commercial use of the product or the failure to follow manufacturer’s instructions.
This One Year Warranty only applies if the product is used for domesticated animals. The Manufacturer, Ideal, is not responsible and shall not have any liability for any damage to or defects caused by acts of god, criminal activity, dog abuse including, but not limited to chewing on the door, lightening, abuse, alteration, trespassing, children’s use of the product, unauthorized access, entry by non-domesticated or “stray” animals, or any other unintended use or misuse of the product.
The Manufacturer, Ideal, disclaims and excludes any liability for incidental, consequential, punitive, general, special or other damages arising out of or connected with the purchase, use, or misuse of the product or concerning any warranty herein.
This One Year Warranty shall be governed by the laws of the State of California, USA. Venue shall be with the Los Angeles Superior Court, North Valley District.
This product, or any of its accessories, parts, or attachments may not prevent adults, children, animals, insects, or objects from passing through or using the opening created by the product.
Ideal Pet Products will not be liable for any unintended or accidental usage, misuse, abuse, criminal conduct, water intrusion, acts of god, damages or injuries occurring or accruing from the use of this product except in strict accordance with Ideal's One Year Warranty accompanying the sale of this product to the original purchaser.