Custom Ideal "Fast Fit" Patio Pet Door

SKU# 01RICust

  • Custom Fast Fit patio pet door for uncommon sliding glass door heights
  • No tools required for installation
  • Insulates well for temperate climates
  • Frames available in white or brushed aluminum
  • Thin and flexible flap is easy for pets to use

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Stock No: 01RICust

Availability: In stock

Price From: $190
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Price From: $190
Custom Ideal "Fast Fit" Patio Pet Door
Close up view of the Ideal Fast Fit Doggie Door | Top and flap

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  • Custom Fast Fit patio pet door for uncommon sliding glass door heights
  • No tools required for installation
  • Insulates well for temperate climates
  • Frames available in white or brushed aluminum
  • Thin and flexible flap is easy for pets to use
Flap SizeFlap DimensionStep
Pet Height*
Overall Width

Small5" w x 7" h2" 6" – 8"9 3⁄4"
Medium7" w x 11 1⁄4" h4"12" – 14 1⁄4" 11 7⁄16"
Extra Large10 1⁄2" w x 15" h8"22" – 24" 15 1⁄4"
Super Large15" w x 20" h8"24" – 27" 19 5⁄8"

*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 5⁄16"
  • E: Tall 93 3⁄4" – 96 1⁄2" (additional cost)

Step-Over Options - These options can be extremely important in properly fitting your pets. They are offered as drop-downs after the size, height and color choices are made.

Custom Height Add-On Extension - If your sliding glass door track is not accommodated by one of these height ranges, you can special order a panel and it will come with a height extension.  If you already have the Ideal "Fast Fit" Panel but it's too short for your slider you can purchase just the Ideal "Fast Fit" Height Extension.

Replacement Flaps and Parts You can get just the replacement flap at Ideal "Original" Replacement Flaps or you can get both the flap and the plastic frame a Ideal "Fast Fit" Replacement Flap Assembly.

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.

The maximum over-all height you can achieve in this manner is 110 ½," and the tallest the extension should be built is 14." However, it can be made to 16", but the manufacturer suggests that you would then semi-permanently install it for stability by drilling the panel into the slider track. The height extension is built to your custom dimension, it is not returnable, though the panel is (provided you haven't ordered any other custom feature like a custom step-over).

If the height of your sliding glass door is too tall for most patio pet door inserts, or in between the stock ranges on the Fast Fit page, then this Custom Ideal Fast Fit Patio Pet Door is the perfect fit for you! Not only does it come with an accommodating height adjustment range, you also have a choice of step-over heights to best suit the height and comfort of your pet. See the drop-downs after you choose flap size, adjustment height, and frame color. If you need help choosing the right size, see our page on how to measure your pets. Custom height extensions can be added to your order should the inserts be too small for your sliding glass door. All custom orders are not returnable.



  • Tool-free installation with the spring-loaded design
  • Separate height extension simply slides into the top channel
  • Sizes come in small, medium, extra large, and super large
  • Aluminum framing fits sliding glass door tracks at least ⅞” thick
  • Clear, vinyl flap contains magnets along the bottom edge to help keep it closed when not in use
  • ⅛” single pane tempered glass
  • Sliding locking cover provided
  • Includes a pin lock to secure your door. Installing the pin lock does require drilling, so if you don’t want any holes, you can purchase a Charley Bar here
  • Ideal for temperate, three-season climates



  • Cost effective solution for uncommon sliding glass door heights
  • Made to complement the design of your existing sliding glass door
  • Lightweight, vinyl flap is easy to use
  • Wide range of flap sizes to accommodate pets of all sizes
  • Great option for very tall dogs
  • Grants pets the freedom to access the outdoors whenever they need
  • Does not require any permanent alterations to your home
  • Great for rentals and vacation homes

Customer Reviews

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  • GOOD PRODUCT! review by Deanne

    This is working in our situation. The existing patio door is warped so there were some gaps that were too wide for the weatherstripping provided, After ordering some of the wider weatherstripping available, we were able to close the gaps and now have a functioning pet door minus the draft.

    (Posted on 2/25/2019)

  • Good review by Gloria
    5 5 Good

    Thank you I haven’t put it in yet , but I think it’s fine .

    (Posted on 2/7/2019)

  • Only good things to say ! review by Cynthia
    5 5 Only good things to say !

    We could not be happier with our new dog door! It is the perfect solution for our mild weather area. Customer service has been incredibly responsive to recommending it and responding to damage after shipping! I would strongly recommend this company and this product to anyone in search of a door door.

    (Posted on 1/25/2019)

  • Good review by Arlene
    5 5 Good

    The support from your staff was important. The help with purchasing and installation was solid. The kindness was tangible. I am an old woman and wanted reassuring. The two young men across the street installed it easily. Thank you

    (Posted on 10/9/2018)

  • Not beach worthy review by Pam
    5 3 Not beach worthy

    Well built door, great customized height for all my cats and dogs to use. Unfortunately, door faces the beach and is not as air tight as I would like it to be and the flap does not stay closed. And it doesn't fit in the hurricane sliding glass door without additional adjustments and weather stripping. All my animals are old and was worried that they couldn't open the flap that was rated for stronger winds.

    (Posted on 8/30/2018)

  • Small means small review by Becky
    5 4 Small means small

    The height and width of the door works great but the flap opening for our dog is very, very small. Since she weighs only about 14 pounds I thought a small size would be sufficient. She definitely could use a medium but since the product is a “custom“ size it can’t be returned. Would absolutely love if it could be exchanged. The flap size would be my only complaint. Order came in a timely fashion and works well with our patio door.

    (Posted on 8/23/2018)

  • 5 stars for a perfect and easy instalation review by Murl
    5 5 5 stars for a perfect and easy instalation

    This door fits great. Dogs love it. I have one very short legged dog and two german shepherds. I bought the xxl flap for the door and the german shepherds have to stoop about a 1/2 inch to get through it but they are getting used to it. Love the clear plastic flap.

    (Posted on 7/6/2018)

  • Good overall, not very secure. review by Kris
    5 4 Good overall, not very secure.

    This is a relatively inexpensive door for a hard to fit space. We have an extra tall ceiling and couldn't buy the standard size. They cut to fit an extra panel for the top that looks the same as the glass door below. It is not an overly secure. I wouldn't put it on a house or first floor apartment unless you secured it better. We are on the 3rd floor, so that was ok. We use a stick in the door since you can't lock the patio door now. We did need to get extra weather strip foam because there was a definite gap due to screws in our patio door. It was inexpensive and easy though. There is still a bit of a draft. I wouldn't use this in cold climates.

    (Posted on 4/16/2018)

  • Great product Just as advertised review by Bart
    5 5 Great product Just as advertised

    We moved into a Condominium with 9 ' sliding glass doors. Our cats access the balcony and hang out. It was impossible to find an appropriate cat door until I ran into this Company. Expensive but fits perfect. You get what you pay for... Typically and in this case

    (Posted on 4/9/2018)

  • great option review by Barry
    5 4 great option

    Great work around for custom height doors. it was easy to put in but I expected it to be one piece. Instead it comes with a panel to put on top of it and it came in a normal box. Fits well and feels secure in my patio frame

    (Posted on 12/4/2017)

  • 4.5 review by David
    5 4 4.5

    ordered a custom length pet door and it worked perfectly. No tools, great fit. You may need to to buy some alternative weather stripping for a good seal. I would give it a 9 out of 10.

    (Posted on 11/19/2017)

  • Best pet door purchase review by Mona
    5 5 Best pet door purchase

    We just moved into an apartment that had a unique height sliding patio door. I did some research and found pet doors custom height door option. I ordered my door and was amazed by the quick delivery of our door. It was easy to install, fit was perfect and our dog was quite happy to have access to his porch potty on his terms!! Thank you pet doors for such a nice easy experience...what a pleasurable experience.

    (Posted on 10/12/2017)

  • Good product review by Peter
    5 4 Good product

    Good product and well made. My hound loves the easy access to the backyard through the right sized door. The optional lower step over height is great to accommodate my toy dogs as well as the larger hound.

    (Posted on 8/19/2017)

  • Great door review by Javier
    5 5 Great door

    Being able to get the extention was great. We had a door that was in between the normal size doors.

    (Posted on 2/8/2017)

  • A Live Saver - Great Door review by Robert
    5 5 A Live Saver - Great Door

    I purchased this door with the low-height step over option as a gift for a friend with three dogs. The low-height option works great for her dachshund and basset hound; they can go in and out with ease. My friend absolutely loves this door because it saves her from having to constantly let in or out one of the dogs, not to mention the multiple times every night that she would have to get out of bed and go let out one of the dogs. It is worth every penny.

    (Posted on 3/5/2016)

  • Not the quality I expected review by Very Large Dog
    5 2 Not the quality I expected

    Pet Doors was the only website I could find the size I needed. So I was left with no choice. I figured all doors are the same right? Wrong. The door is so thin, and does not fit into the door track well at all that it shakes every time my dog goes in and out. Not to mention the air flow that comes in between the door, the slider and the top and bottom. Also, because i assume this door is the same one they use whenever you ask for different step over options, that is is in pieces, and again, since it does not fit within the door very well, it is separating at the "seams". I have had this doggy door for 3 months and am frantically looking for another one before the cold weather hits. Would I buy from again, NO!!

    (Posted on 10/28/2014)

  • We all are loving it! review by Dog Momma
    5 5 We all are loving it!

    We had a hard time finding a tall door for our slider. Luckily, we did find one that is functional & aesthetically pleasing. I love that I can see out of it & it looks like it belongs. Neither my husband nor myself are very handy but we got it in fine. I did go up to the auto supply & purchased more insulation as we needed more, easy deal. I would buy again. One other thing.. The delivery guy dropped it off at our neighbor's house in error, just in case FYI

    (Posted on 10/27/2014)

  • Great pet door, easy to use. review by Lin
    5 5 Great pet door, easy to use.

    We bought the 96"+ medium flap door for when our friends and family bring their dogs. It takes on a few minutes to put in or take out....and stores easily in our garage. We're thrilled that we found it.

    (Posted on 2/6/2014)

  • LOVE LOVE LOVE! review by Kristin McDonald

    I have a home office (with a big sliding door) which I share with one of my employees. I also have 2 big labs who love that they can hang out with us... BUT, they drive us crazy by always wanting to in, out, in, out, in, out. It got to the point where I bought a pedometer to see how much I was walking per day just letting them out! I looked into doggie doors, but did not want a permanent hole in my wall. I founds some Patio Pet doors but they could not accommodate the XXXL size I needed for my dogs. The, I found this miracle. First, it's not permanent. Second, it came in a Super Large size, and third, it was super easy to install. This patio pet door has truly increased my productivity! It's a life saver... I love, love, love it. It works fantastic. My two big guys are not gentle on anything, and the door has withheld them racing in and out like bulls. Thank you, and YES. I highly recommend this product!

    (Posted on 7/24/2013)

  • Ideal "Fast Fit" Patio Pet Door review by beagle lady
    5 5 Ideal "Fast Fit" Patio Pet Door

    Love the Pet Door. I had special height restrictions due to "ahem" overly large but short beagles. The door is perfect for both my smaller beagles and the chubby ones. Will definitely buy from America's Finest Pet Doors again!!

    (Posted on 7/7/2013)

  • Second Patio Fast Fit Door and love both review by Sandie
    5 5 Second Patio Fast Fit Door and love both

    I lived in a townhouse with taller sliding doors. Bought the larger one for my 3 lb. pet bunny, Roger. It was so easy to put up and just perfect. Roger learned how to use it FAST but thought he was too good to use that door so a bit of a conflict with whose the boss in the house. Then I moved to another home and the doors were shorter so bought another door for Roger so we could argue over his using it, and it was just as easy to install. The customer support is outstanding. I have told many friends and acquaintances of this product and to order it only from this website. In a 5 star rating would give it 5 stars.

    (Posted on 6/14/2013)

  • Love it! review by Mike
    5 5 Love it!

    I customized my door to add 4" for my Great Dane. I am very happy with it so far!

    (Posted on 6/13/2013)

Weight 25.0000
Manufacturer Ideal Pet Products
Your Maximum Pet Size Cats, Large Cats, Small Dogs, Medium Dogs, Large Dogs, X-Large Dogs
Climate Suitability Temperate-3 Season, Mild or Utility
Sealing Value Low
Wind Resistance Low
House Locking Method Pin Lock
Frame Material Extruded Aluminum
Custom Heights Available Yes
Can Fit Sideways Sliding Windows Yes
Track Width Minimum 7/8"
Tools Required For Installation Yes for pin lock only
Insulation Value Low
Flap Material Vinyl
Flap Design Single, One Part , Flexible, Thin Flap
Flap Colors Clear
Flap Thickness 1/8"
Locking Cover Material ABS Plastic
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

Quick Video on Installing the Fast Fit

Fast Fit Aluminum Pet Patio Door

Step 1: Release the automatic height adjustment by turning the knobs located near the top of panel counter-clockwise and pressing. The height adjustment panel should fully extend upward (pull up on panel if necessary).

Step 2: Open the sliding glass/screen door.

Step 3: Insert the Fast Fit with the knobs facing inside. Place the top edge into the top track of the sliding glass/screen door. Lift up and swing the lower portion of the panel onto the ridge in the sliding glass door (or screen door).

Step 4: Slide the Fast Fit against the door jamb. Make sure that top is fully extended (not tilted to one side) and the bottom of the panel is on the ridge in the bottom track. Slide the height extension piece into the top channel of the pet door.

Step 5: Hand-tighten the knobs by turning clockwise to lock the Fast Fit in place.

If you would like to permanently install the Fast Fit, you may screw through the aluminum fins that protrude on the existing frame of your door. Drill through the fins into the Fast Fit. Install two screws in the top and two in the side by the bottom of door. Do not put any screws into the frame by the glass of the Fast Fit as breakage may occur.


Optional Permanent Placement for Fixed Panel Sliding Door

Remove the screws that hold the fixed glass panel in place and slide it over. Insert the Fast Fit panel between the stationary panel and it's jamb. Re-fasten the fixed glass panel.


Installing Security Lock (Optional)

Step 1: With the sliding door in a closed position, place the lock in the desired location with the bolt in the retracted position, pointed toward the sliding glass door or stationary window rail. Leave approximately ⅛” clearance between the bolt tip and the aluminum rail.

Step 2: Holding the lock firmly in place, mark the screw holes and center of the bolt in the rail of the sliding door or stationary window.

Step 3: Drill two 5⁄32" holes for the mounting screws and a ⅜” hole for the locking bolt.
CAUTION: Do not drill into glass.

Step 4: With the sliding door in the closed position (with Fast Fit installed), mark the position for the second set of holes.

Repeat above instructions. CAUTION: Do not drill into glass.

In Depth Ideal 'Fast Fit' Installation

Click below to expand:

Yes - you get the regular panel with the height adjustment range that is shorter than your custom height as well as the custom-built extension panel that allows the door to fit the height of your track.

It's not. We have just combined the two for your convenience. The prices are exactly the same as well.

As long as the panel does not have a custom stepover, you can return the panel portion w/ the pet door, but you will not be able to return the custom height extension panel.

Calculate the height extension needed for a given track height by subtracting the maximum height of the adjustment range of the panel you've chosen from the measured height of your sliding glass door track and then add back 2-1/8".

Aluminum - if you have a vinyl track, the Ideal brand has the VIP and VPP models available. However those will not offer any custom heights outside of the listed adjustment ranges.

Ideal panels are best suited for temperate climates where insulation is not a vital factor when choosing a pet door.

No, the Fast Fit does not have an adjustable step over. However, you can get a custom step-over. Keep in mind that the custom step over cannot be adjusted once built, and it does make the item non-returnable.

The FastFit frame is 7/8" thick.

The door comes with a pin lock you can install. Alternatively, you can purchase a Charley Bar for added security.

Yes because the CUSTOM portion of this product is the extension panel that is built specifically for the height you need. So the box should contain the panel and the patio door extension.

Then you could go with the 75 inch patio pet door height option, and if necessary you can trim the flange at the top about 1 inch to be able to get it up and into your track.

Most are made from aluminum and glass. In rare cases for small extensions they are all aluminum.

You can trim up to 1" off the top of the Ideal Fast Fist.

Most are made from aluminum and glass. In rare cases for small extensions they are all aluminum.

This Ideal FastFit is a temporary pet door for sliding glass door and takes a few minutes to install or take out. The more you do it, the easier it is.

Yes, it can be done. Please call (800) 826-2871 x2 for a custom order. The other option is to order the small flap (soft vinyl) on the Custom Ideal "Fast Fit" Patio Pet Door.

Yes. Calculate the height extension needed for a given track height by subtracting the maximum height of the adjustment range of the panel you've chosen from the measured height of your sliding glass door track and then add back 2-1/8".

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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.