Ideal Fast Fit Height Extension Panel

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  • Doggie door extension piece for added height to your Ideal Fast Fit dog door insert
  • Allows the Ideal panel to fit any track height
  • Fits the Ideal fast fit patio pet door only
  • Available in bronze, brushed aluminum, and white
  • Custom and non-returnable
  • We are currently taking custom orders over the phone. Please call 1-800-826-2871 to place a custom order.

If your sliding glass door track height is between 80 5/16" - 93 3/4" or 96" - 110 1/2", the Ideal Fast Fit patio panel pet door will not be tall enough to fit into your door frame. Fortunately, Ideal offers a custom height extender for sliding glass pet doors to accommodate customers who have odd track heights. If you have not already purchased the panel, you can order the custom pet door extension and panel together.

 Follow the instructions below to accurately place your custom pet door panel extension order.  You will be contacted for this necessary info after placing your order:

Step 1: Select the framing color you wish:

  • Bronze
  • Brushed Aluminum
  • White 


Step 2: Determine what your height extension needs to be in inches. Calculate it by subtracting the fully extended panel height from the height of your sliding glass door track. Then add 2 1/8" order to get the correct height for the extension. Below is an example calculation:

  • Track height = 88", Panel = 80 5/16"
  • 88" - 80 5/16" = 7 11/16"
  • 7 11/16" + 2 1/8" = 9 13/16" (Round this number to the closest whole inch)
  • You should choose the 10" height extension

Please Note: The maximum height for the extension is 14". It can be built up to 16", but the manufacturer suggests that you then semi-permanently install it for stability.  This would involve drilling into your track and securing it with screws.

Step 3: Measure the full width of the panel in inches from left to right, not just the flap size.

Please Note: The Ideal Fast Fit patio panel pet door height extension will not fit any other patio pet door panel, so be sure to double-check that your door is an Ideal with the aluminum framing. Also, because it's a custom-built order, it is not returnable after purchase.


How do I know if I need an extension?

The doggie door extension would work for you only if you have an Ideal sliding glass door height between 75" - 77 1/2", 80 5/16"-93 3/4", or 96"-110 1/2"

How do I figure out the height I need?

Calculate your Ideal extension size by subtracting your current panel height from the maximum height of your sliding door, then add 2-1/8" in order to get the correct height for the door extender. This calculation is the same for the 96" door as well.

What is the maximum height I can get for the fast fit extension?

The maximum height for the extension is 14". It can be built up to 16", but the manufacturer suggests that you then semi-permanently install it for stability for any extension greater than 14".

Can you give me an example?

Certainly. If you measure your track height at 88" exactly, you would then subtract 80 5/16" from 88" equals 7 11/16" and add back 2 1/8" = 9 13/16". Height extender measurement would be specified as 9 13/16" in the dialog box offered.

If I measure incorrectly, can I exchange it?

No. This custom extension panel is built to your exact specifications, so it is non-returnable/non-exchangeable.

Is it better to underestimate or overestimate when measuring?

If you're on the borderline of a measurement, it's better to overestimate a little bit (but not too much) as the panel itself can always be shortened down to the lowest end of its range. That said, do your best to get the most accurate measurement you can.

What is this height extension compatible with?

The height extension for patio pet door is only for Ideal "Fast Fit" Patio Pet Door, Ideal "Fast Fit" Sliding Glass Cat Doors, and Ideal "E-Cat" Electronic Panel Pet Door.

Why does it ask me for flap size?

The flap sizes correspond to a certain width, so we ask this in order to determine the width of your panel.

Then why does it ask me for the width of the panel again?

If you have one of the older Ideal Fast Fit models, it is possible that the width is a little different, so we ask this just to double-check.

Does this work for the Ideal VIP/VPP panels or other panels?

No, this is only compatible with the Ideal "Fast Fit" and "E-Cat" panels.

If my dog door extension only needs to be a few inches tall, will it have glass?

Chance are, no. If it is a short height extension, it will more than likely be aluminum only.

Does this sliding glass dog door extender need to be screwed to the Fast Fit Panel?

For shorter dog door height extension, it is not necessary. However, it can help make the connection between the two more secure. For tall heights, it is necessary to screw the two together.

Will this pet door extender work with other brands of pet doors?

The Height Extension is designed exclusively for the Fast Fit and should not be used with other Ideal models or other pet door brands patio panels.



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.

One Year Warranty:

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 the 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 the 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.

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