SureFlap Dual-Scan Cat Door for Walls

SKU# 04SFdsWall

  • Comfortably installs in walls of any thickness with tunnel extensions adding 2" of framing
  • Controls animal access both ways
  • Match your home finish with two color options available
  • Select your color option and thickness of your wall

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SureFlap Dual-Scan Cat Door for Walls
Dual Scan with wall  extensions

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  • Comfortably installs in walls of any thickness with tunnel extensions adding 2" of framing
  • Controls animal access both ways
  • Match your home finish with two color options available
  • Select your color option and thickness of your wall
Flap SizeFlap DimensionRough Cut OutOutside
Stock No
Cat Flap5 5/8" x 4 3/4"6 1/2"w x 6 3/4"h8 1/4"w x 8 1/4" h04SFdsWall

The SureFlap DualScan works with all identification microchips supplied by your vet and SureFlap RFID collar tags.

This SureFlap Dual-Scan Cat Flap and Wall Liner Kit provides the parts needed to install the Dual-Scan SureFlap Cat Door through a wall.

The Dual-Scan version of the SureFlap Cat Door controls access from both inside the house and outside giving you more flexibility than the original SureFlap Cat Flap. Use the Dual-Scan when you have indoor pets than you want to prevent from getting out in addition to keeping outside straus and wild animals from getting in.

Please make a reasonable estimate of wall thickness when selecting wall liners. The depth of the door itself is 2 3/4". You want enough to get your installation to within 2" of total wall thickness. The cat door itself will provide the final 0"-2" to finish the job. Better to have one too many and return it then to be 1 short on the day of the job.

The DualScan Cat Flap controls which animals enter your home as well as which animals exit. In other words, only cats with a microchip that the Sureflap is programmed to open for will be able use the DualScan Cat Flap to come inside AND go outside. It is compatible with all common microchips available in North America (test before installing) and also works with SureFlap RFID tags worn on a collar. However, if your pet is already chipped no need to pay extra for the collar key.

Haven’t had your cat micro-chipped? You should get it done. If you cat is ever lost—and it does happen-- any vet that he/she is brought to will scan for a micro-chip. If a microchip is found, your cat can be brought home safe and sound. If not.... the odds are very slim. Incidentally, if your cat was chipped some time ago, it may have been a 'free floating' one, in which case, the door may not sense it and you may need to get the cat re-chipped. Newer chips have barbs on them and keep in place. Incidentally, SureFlap has an RFID disc available that may be used while you're waiting for the vet. Just don't use the two, chip and disc, together or you'll confuse the cat door.

SureFlap is compatible with all commonly used microchips (it is not included with the pet door and must be purchased from your vet and implanted at a scheduled office visit).

Check with your vet if you have a question about the type of microchip you are using. The programming process is extremely simple! Your cat walks through, the door senses the microchip and remembers it.

The DualScan Cat Flap can remember up to 32 different pets.There's a special 'safety mode' that can be set to allow entry for indoor-only cats who accidentally get outside through a different door or window.

The unit is operated by 4 AA Batteries, so there's no need for nearby access to wall power. Typical battery life is 6+ months so change twice a year to be safe. In some cases, batteries have been known to last up to 12 months. There is a low battery indicator light to let you know whenthe battery is getting low if you plan to check regularly. 

In addition to the electronic mode, there is a four-way locking capability that overrides all programming. 

May be installed in a door. There are special accessories--wall liners and mounting adapters--to allow installation in walls, single, double or triple-glazed windows. Note that for double-glazed windows the glazier must use a non-metallic spacer bar around the hole for correct performance.

One last caution: If you want to install this cat flap in a metal door, you'll need to build a wooden collar to keep the cat flap separate from the metal. The installation instructions explain how to do that and how wide the collar needs to be.

Customer Reviews

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  • Good pet door but small for large cats review by Char
    5 4 Good pet door but small for large cats

    I love this door because it can keep my inside cats inside while letting my outside cats go through. The only complaint that I have about this is that my 15lb cat is a bit too fat to use this door comfortably.

    (Posted on 12/27/2017)

  • Sure flap dual scan review by RG
    5 5 Sure flap dual scan

    It took some doing, but now I freaking love this door. I bought this door because coyotes have recently become a problem.

    I had to train each cat differently. One was motivated by and out repeatedly with his favorite food. The other (miss independent), she watched the other one, and figured it out, but totally freaked when the lock mechs activated.

    There is a custom feature that delays the locking mech for ten seconds. I used that, which helped tremendously. She would jump, but would already be out or in. Now, when she hears the door click in the morning, she knows she can go outside, and runs to it! I no longer have to use the ten second delay option.

    Now, if we could only get it with Wi-Fi. Then I could get a text msg from my cats, that they are safely in after the door locks. How cool would that be!

    (Posted on 12/23/2015)

  • sound of unlocking mechanism scares cat review by Emmy
    5 3 sound of unlocking mechanism scares cat

    The door works fine except my cat is scared by the clicking to lock or unlock, therefore I can't get her to go thru the door by herself, which defeats my whole purpose of having the door. i can physically push her through from the inside out, but she refuses to go in from outside. She's not very food oriented so as of yet I haven't tried to bribe her with food.

    I would really like some suggestions because it's starting to look like I spent $200.00 for nothing.

    (Posted on 2/24/2015)

  • Good replacement . . . if your cat isn't skittish review by Hack Attack
    5 4 Good replacement . . . if your cat isn't skittish

    We bought this cat door because it was reportedly raccoon-proof. So far, so good on that count, although the raccoon has done some minor damage. Unfortunately, we haven't been able to implement the feature that opens the door only for our cat based on her embedded chip because she gets freaked out by the clicking sound that's made when the flap is released. Also, she's scared by the tunnel when coming in from outside (it goes through our garage wall and is rather long). Overall, it's a great cat door, especially if your cat isn't skittish..

    (Posted on 10/24/2014)

  • A n awesome product ... review by Mimi Sandy
    5 5 A n awesome product ...

    I am so happy with my SureFlap Dual Scan Cat Flap. With the SureFlap, my little girl "Paddington Bear" can now come and go as she pleases without me having to manually lock and unlock the cat flap. I highly recommend this product..

    (Posted on 8/19/2014)

Weight 1.0000
Manufacturer SureFlap
Your Maximum Pet Size Cats
Controls Access From Inside and Outside
# Collar Keys Included 0
Operates On Battery
Flap Opens Pet Must Push
Frame Material Plastic
Wall Thickness Range 2"-8"
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
Can Be Installed In Kennel Wall, Walls
Adapter Available for Installation in Wall Yes
Adapter Available for Installation in Plate Glass or Other Weak Material Yes
Warranty Period 2 years
Return Period 30 days
Manufacturer's Restocking Fee 0

How To "Learn" your cat into your DualScan Cat Flap



How to Install in a Door



How to Install in a Door Animation

How to Install Your DualScan SureFlap in a Wall for Cats

Tools you will need:


All Weather Tape

All Weather Sealant

Blu Tack

Masonry Drill

Masking Tape

Sharpened Pencil

Spirit Level



Manufacturer recommendations:

For DIY installers, please note the use of power tools or cut glass may be necessary. Safety equipment (gloves, eye protection, etc.) should be used. Consult a professional when necessary.

Remember you may need to remove the unit at a given time if you move or change out units. As such, do not glue the main assembly to the wall; upon removal of the unit this could result in damaging the surface of your wall

A mounting adaptor and tunnel extenders are recommended for wall installations

 1) Measure your pet from feet to shoulder. When installed, the top of the flap opening should be at least an inch above their back. If there is a drop down on the outside of your wall, take this into account as you may need a step or ramp.

2) Select your installation location on the wall for the cat flap. This should be a convenient location for your pet to enter and exit the home

3) Using your pencil, mark a 6 1/4" w x 6 1/2" h square on the wall. This is indicating the position of the wall tunnel.

4) With the appropriate tools, make a hole through the wall ensuring the tunnel will be horizontal. Any slope downward from the inside to the outside of the home will ensure any rain runs out of the tunnel.

5) Apply super glue to the four tabs of the tunnel extender. Fit the extenders together. When the glue has dried, place the weatherproof tape to the outside of the tunnel.

6) Revisit Step 5 to bond all of your wall extenders together. Do not glue your tunnel to the tunnel of the cat frame. Just use tape when you get there.

7) Take a mounting adaptor and drill four holes in it using a 4mm drill bit. These 4 holes are for the screws that will hold the cat door to the interior of your home. You can place the four screws where you like around the perimeter of the mounting adaptor.

8) Take the two shortest screws from the box and using a washer, screw the mounting adaptor to the cat door frame.

9) Place the cat door (with the adaptor if you have it) in the hole in your wall on the inside of your house.

10) With a pencil, mark the positions for the four screws through the holes you have made in the adaptor. You’ll  need to remove some material from your wall to allow the screw and washer which hold the mounting adaptor to the entire frame. This ensures your adaptor fits flush with the wall

11) Drill through four holes in your wall using a drill bit suiting the construction of your wall and your chosen screws.

12) Tape your wall extenders to the end of the cat door tunnel

13) Place the SureFlap frame and the tunnel through the hole in your wall. Screw it in place through the mounting adaptor.

14) Take the exterior frame of the mounting adaptor and cat door frame to place over the end of the tunnel.

15) Mark the position of the two screw holes required to mount the external frame. Drill these holes in the wall.

16) Tightly screw your external frame and adaptor to the outside wall. You can use small screws to hold the end of the tunnel extender as a way to help installation.

Note: It is recommended to place waterproof sealant between the tunnel and external frame to restrict water from getting into the wall cavity

Click below to expand:

Yep! Since this requires a microchip or collar key to be used for entry and exit you can use it to keep some cats inside and let others in and out.

This is a fairly small flap so the easiest way to check would be to cut a hole in a piece of cardboard 5 3/4"w by 4 3/4"h. Then see if they can get through without squeezing.

You can purchase more tunnels here to fit any wall thickness.

No, the chip would have to be implanted by your vet.

The Sureflap doors are 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)

Yes, the latches will unlock and then they have push open the door.

As the flap is locked it won't blow open, and it has a fuzzy weather stripping surrounding it for added insulation.

They are plastic.

There is a clicking noise when the locking pins retract into the frame.

This door does not have a timer, although it does have a manual 4-way locking feature. For a model that does have a built-in timer/curfew mode (no 4-way locking feature), check out the SureFlap Microchip Pet Door for Walls.

If you are installing in metal or glass, this is a requirement as glass and metal can interfere with the electronic signal of the cat door. For standard wall materials, the adaptor is a recommendation.

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SureFlap ™ Cat Door Guarantee

Guarantee  SureFlap ™ microchip cat flaps carry a 2-year guarantee from the date of purchase, subject to proof of purchase date. The guarantee is restricted to any fault caused by defective materials, components or manufacture. This guarantee does not apply to products whose defect has been caused by normal wear and tear, misuse, neglect or intentional damage.

In the event of a part failure due to faulty parts or workmanship, the part will be replaced free of charge during the guarantee period only. At the manufacturer's discretion, a replacement product may be provided free of charge in the case of a more serious malfunction. Your statutory rights are not affected.

Disclaimer The SureFlap™ microchip cat flap incorporates selective entry features which have been designed to minimize the risk of unwanted animals entering your home. However, it is not possible to fully guarantee the exclusion of all other animals in all circumstances.

In the rare event of an unwanted animal gaining access to your home, SureFlap cannot accept liability for any damage or inconvenience which may be incurred.

Warning The motorized catch and manual lock are provided exclusively to prevent the entry of unwanted animals and is not a security device. SureFlap Ltd cannot accept liability for unintended use and the owner of the product accepts full responsibility for supervising the access in and out of the home that it provides.

In households with children, it is essential to include the cat flap in child-proofing considerations. Misuse of the cat flap by a child may result in the child coming into contact with potential dangers. For this reason, young children should be monitored at all times when in the immediate vicinity of the cat flap.

Caution Prior to installation, it is the responsibility of the user to consult all building codes which may influence the fitting of the cat flap and assess the suitability of a given installation. The user must also consider potential hazards present inside or outside the cat flap as well as the impact that subsequent modifications to your property may have on the existence and use of your cat flap. It is recommended that these assessments are conducted in consultation with a construction professional.

Do not install SureFlap ™ in a fire door as it will render the fire door unfit for purpose.