Thermo Sash 2e with SureFlap Microchip Pet Door

SKU# 07PPC21

  • Combines the best insulating window insert with the trusted SureFlap Microchip Pet Door
  • Easily programmable raccoon resistant user setting
  • Maintain your home's insulation with dual pane, LoE glass
  • Quick and easy installation requires no tools
  • Adjustable side fits windows from 22" to 43" in width
  • Free shipping within the U.S.
  • Assuring 3 year warranty for the microchip pet door, and 15 year coverage for the panel

Stock No: 07PPC21

Availability: In stock

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Thermo Sash 2e with SureFlap Microchip Pet Door
The Sureflap with a microchip is a superior device to keep unwanted animals out of your house. 

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  • Combines the best insulating window insert with the trusted SureFlap Microchip Pet Door
  • Easily programmable raccoon resistant user setting
  • Maintain your home's insulation with dual pane, LoE glass
  • Quick and easy installation requires no tools
  • Adjustable side fits windows from 22" to 43" in width
  • Free shipping within the U.S.
  • Assuring 3 year warranty for the microchip pet door, and 15 year coverage for the panel
Flap SizeFlap DimensionHeight To Raise WindowStock No
Small7" x 7"16"07PPC21


Adjustment Ranges:

  • 22"-25" (custom, non-returnable final sale)
  • 25"-28"
  • 28"-31"
  • 31"-34"
  • 34"-37"
  • 37"-40"
  • 40"-43"

22"-25" adjustment range sales are final, no return.
Please simulate the opening (open the window, use duct tape
to simulate the opening) to be sure this size is appropriate before ordering.

90 day return policy applies to adjustment ranges other than 22"-25"

If you would like to purchase this product with custom adjustment ranges, please call us at 1-800-826-2871 for more information. 

Thermo Sash 2e with SureFlap Pet Door for sash windows

With the introduction of the SureFlap on the Thermo Sash panel, you now have the luxury of controlling the access to the flap for your pet and any intruders you are trying to keep out. With accessibility control, you no longer have to worry about letting your pet in and out of the home, which comes as a huge convenience for many busy people who are out of their homes often. Additionally, the ease of installation of this panel makes this a very user friendly pet door. Installation does not require any tools either. Along with the convenience factor, the durability and high quality material the panel is made from, it will keep your home comfortable no matter what the weather outside is like.

The SureFlap pet door has a 7”w x 7”h flap opening, which is large enough for cats and smaller dogs. The flap itself is activated by a collar key implanted in the back of your pet’s neck. There is also the option to activate the flap through a RFID collar key which is included. The SureFlap is the solution to keeping intruders (like Raccoons) out of your home, while being able to control access to each one of your pets. With the ability to change the access mode, timid cat mode, curfew mode, in-only, out-only, manual, you can customize your settings to fit with the type of pet you have.


  • Exclusive – The Thermo Sash panel pet door includes the Sureflap Microchip pet door. 
  • A flap that will provide excellent security against unwanted intruders as well as control the access each one of your pets has using the door to come inside your home. It does not control which pets exit your home!
  • Dual Pane, Insulated Low "E" Glass is the highest performing glass available. It is standard on the Thermo-Sash 2e™. This glass unit is guaranteed for 10 years!
  • Spring Load design can be installed and removed in seconds. No Tools installation.
  • Exclusive -Built-In anti-whoops allows for 3/4" change in adjustment range to allow for small measuring errors.
  • Draft Stopper - Keeps air from coming in between the two windows. 
  • Adjustment Ranges accommodate windows 21 3/4" - 43" wide in 3" increments. Be sure your track width is at least 1".
  • Designed, engineered and manufactured in the U.S.A. 

SureFlap is compatible with the following commonly used microchips in North America:

  • All 15 - digit (FDXB)
  • All 10 - digit (FDXA) except those with codes starting 000..., 010..., or 020...
  • All 9 - digit (Avid Secure/Encrypted Chip)  

Key Benefits of the SureFlap:

  1. First, the locking mechanism has four separate locking pins holding the flap in place. This makes for a very strong and secure lock against intruders including raccoons. 
  2. Up to 32 different chips (either vet implanted or external rfid tags) can be stored in memory. So no matter how many pets you have (up to 32!) you can allow them to use this pet door. 
  3. A simple control allows you to electronically set a 4-way lock. So your pet door may operate as 'in-only' or 'out-only' as well as normal 'both way' and 'locked' operation. 
  4. A built-in timer allows for what the manufacturer refers to as 'curfew' mode. This mode allows you to activate and in-activate the 4-way lock at specific times of the day.
  5. If you find yourself without a collar key for some reason, this pet door is easily set to 'manual' operation (ie no entry controll) until you have your chip or collar key back again.
  6. Please note, this pet door does NOT control which animals leave your home, only those who enter your home.


Raccoon Mode

When custom mode 5 has been activated, as soon as the sensors detect an animal’s head in the tunnel of the product, it scans to read the animal’s chip.  If the animal is not one whose identity is stored in the door’s memory, the two locks on the exterior of the door are activated for added security.  At this point the unit will keep scanning for a microchip and the exterior locks will remain engaged until approximately 10 seconds after the intruder animal has moved away from the door.  When the exterior locks are engaged it makes it impossible for the raccoon to open the door towards them in order to get in.  The interior locks prevent the raccoon from pushing through the door into the house – the combination of the two sets of locks have proved impenetrable to raccoons in our product testing.The only time that we would not recommend engaging this custom mode is if the pet tends to play with the flap by batting it away from them whilst sitting in the house.  If the flap is batted far enough open into the tunnel that it triggers the sensors, the secondary locks would engage and when the flap closed the door would be locked in both directions for a period of 10 seconds or so.This sounds to us as though the SureFlap people have really working on developing an impenetrable, secure from intruders, pet door.  

Customer Reviews

Set Direction
  • Best of the best!! review by Karen
    5 5 Best of the best!!

    Our cats were used to coming & going through a flexible cat door at our old house, but when we moved, the same pet door proved useless. First, there was no entryway in which to install it... my frugal husband instead mounted it on a piece of plywood that we stuck in a window. Secondly, all the new neighborhood cats kept coming through this easy doorway. We contemplated getting an electronic wall-type pet door, but didn't want the expense or the size. I didn't know what to purchase and agonized over numerous products spanning multiple websites. Something had to be done soon, so I saw some reviewers give's customer service high ratings. The gentleman I spoke to was an absolute wealth of knowledge, walking me through our particular needs and issues.

    Even though the SureFlap microchip pet door + window unit combo is on the pricey side, it really is the best solution for us. Not only does it look modern, sturdy & sleek, it was a breeze to install and program. The window piece is remarkably sturdy and nice looking. It took about 1 minute for our more outgoing younger cat to figure out the new hard flap door, however, our older, timid cat became extra slow & cautious around this new door's "tunnel" and the noticeable click the door makes when the microchip is sensed. When this cat finally felt comfortable using the door, it took a few more days beyond that for her to be seem relaxed... perhaps because she no longer needed to be so vigilant, waiting to see what was going to invade her new house.

    We are extra pleased with this purchase and with's customer service. The best, hands down!

    (Posted on 9/26/2017)

  • Excellent solution review by Kathy
    5 5 Excellent solution

    This is a wonderful product, I had a SureFlap Microchip pet door at my previous residence and loved all the features, and since I moved I (and my cats) have really missed it. We could not cut through any doors or walls but once we found this option for a window we were so excited! Cats have their special door back, and it was easy for me to install on my own.

    (Posted on 10/11/2016)

Weight 40.0000
Manufacturer Endura Flap
Your Maximum Pet Size Cats, Large Cats, Small Dogs
Controls Access From Outside Only
# Collar Keys Included 1
Operates On Battery
Flap Opens Pet Must Push
Type of Window Sash (Up & Down)
Frame Material Plastic
Flap Material Acrylic
Flap Design Single, One Part , Rigid, Thin Flap
Flap Colors Clear
Flap Thickness 1/8"
Locks in Two Directions (better for raccoons) Yes
Door Open Type Unlocks for the key signal and pet pushes open
Additional Lock 4-Way Lock
Number Pets 32
Activated By Implanted Chip, RFID , Ultra-Sonic
Can Be Installed In Sash Windows
Warranty Period 3 years
Return Period 90 days (except for custom height ranges)
Manufacturer's Restocking Fee 0

Click below to expand:

Track width, Height you can raise the window, How wide the window is from left to right.

No, this only controls who comes in and anything can get out. If you wanted one that controlled both ways take a look at the sash here with the Dual Scan here.

You want to measure how high you can raise your window, should be at least 16". How wide the track is from the deepest part inside the left to the deepest part inside the right. Last the sash is 1" thick so make sure your track is wide enough for the sash to fit into on the left, right, and bottom.

Since the flap is only 7" x 7" it is really best for very small dogs and cats.

Cut a hole in a piece of cardboard that is 7" x 7" and see if they can get through. If not, we would advise that you go with a larger pet door and it would have to be a different installation method, so door, wall, or patio panel.

Yes it is very raccoon resistant, but you would have to make sure you have enabled Custom Mode 5 as stated in the instructions.

You can also get the sash and door in bronze, which it a very very dark brown almost black.

We made it so that the door was easier to install, take a look at the installation instructions and see if this is something you would be able to do on your own.

Compared to other doors the SureFlap Microchip Pet Door is more straight forward to program and the instructions are very well written and easy to follow.

Yes the panel has dual pane lo-e glass, and since the flap locks it stays shut and you will not experience any wind blowing it in.

Yes you can lock the door and it even has a timer function so you can lock it when you choose automatically.

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