Endura Flap™ Cat Doors for Walls

SKU# C04PP06

  • Engineered to be the best all weather pet door on the market
  • Flap utilizes three sided magnetic seal keeping it closed in gusts up to 50mph
  • Durable aluminum frame and tunnel fits walls up to 8” thick
  • Most reliable pet door on the market, backed by a 15 year warranty
  • Free shipping within the US

Stock No: C04PP06

Availability: In stock

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Endura Flap™ Cat Doors for Walls
Endura Flap Cat door for walls

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  • Engineered to be the best all weather pet door on the market
  • Flap utilizes three sided magnetic seal keeping it closed in gusts up to 50mph
  • Durable aluminum frame and tunnel fits walls up to 8” thick
  • Most reliable pet door on the market, backed by a 15 year warranty
  • Free shipping within the US
Flap Size &
Stock No
Flap DimensionRough Cut OutOutside Frame DimensionFlap Type
6" w x 11" h8 5⁄8" w x 15" h9 7⁄16" w x 16" hSingle

The Endura Flap Cat Door for Walls

If you've never owned a pet doors before, you're going to be very satisfied. It does what you think it should. But if you have ever owned a pet door, hold onto your socks - you're not going to believe how much better this is than what you've had in the past. Take a look at the Endura Flap Pet Door Information that we've provided, and you'll begin to see what we're so proud of!


Exclusive! Award-Winning, Extreme Performance Endura Flap(patented, pat. pending)

We get it, you're tired of replacing worn out, leaking flaps? You owe it to yourself to investigate the Endura Flap. This is the best, most highly engineered pet door flap ever made. It seals, it insulates, and it lasts forever!

Adjustable Magnets

Gives you the option to lessen the superior magnet seal, making it easier to push through for training. Then lets you gradually increase it as your cat becomes more comfortable.


Sturdy aluminum framing with hidden hardware.

Environmentally Friendly Flap Material

Safe for the environment unlike vinyl (PVC) which is not.

Self-Framing Heavy Gauge Aluminum Tunnel

For all walls up to 8" thick (ample for most 2x4 and 2x6 stud walls)

Sturdy Locking Cover

Locks pets in or out. Easy to use clip lock is better than the old spring-loaded pin locks.

Flap Size

Small single flap 6" x 11", giving a little more room for the bigger kitties.

Superior Customer Protection

90 day return, 15 year warranty


100% designed, engineered and manufactured in the USA.

Rainwater in the Tunnel

The Endura Cat Door has a high threshold on the inside and no barrier to the outside. Wind-driven rain will enter the tunnel, but will quickly drain toward the outside and not into your home.

As with all wall-mounted pet doors, careful caulking of all seams is vital to prevent water penetration inside your walls.

Customer Reviews

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  • Worth the Cost review by OM
    5 5 Worth the Cost

    Second home we have used this pet door. Quality product that lasts. Design keeps heat out (we live in Yuma, AZ) Nothing bad I can say about it.

    (Posted on 2/6/2016)

  • We are thrilled review by Carroll and Sam
    5 5 We are thrilled

    All claims are true, the door works great, especially at insulating against wind and cold. It is night and day for us compared to what we had before. Worth the money. It will pay for itself in heating bill reduction!

    (Posted on 2/8/2015)

  • Great product! review by Prismatic
    5 5 Great product!

    As soon as I took it out of the box I know this was a high quality door. Material was solid and sturdy. Flap was well designed. Every item you needed to install door was included (Locktite, silicone, even training treats!).

    I would highly recommend this to anybody.

    (Posted on 2/3/2015)

  • GREAT review by CL
    5 5 GREAT

    This is our first pet door, so I don't have anything to directly to compare to, but I can't imagine they get much better than this. Installation wasn't too hard (I had a friend who's better at such things come and help, I might not have gotten it done without him).

    The installed door is great. Looks pretty good. More importantly seals tight and doesn't let any cold air in. I'm super happy.

    (Posted on 12/1/2014)

  • Excellent review by Suzie-q
    5 5 Excellent

    Easy to put together; however, I wished the entire gate was made of stainless steel; I would gladly pay more since I live in harsh marine area; great product!!!!

    (Posted on 11/6/2014)

  • Great! review by Ron
    5 5 Great!

    Very sturdy, well built, keeps the weather out. My only complaint was that the little packet of 303 Protectant was all dried out. I read up on the stuff online, and was so impressed I went out and bought a bottle. it was a nice touch to include it (except that it was dried out).

    (Posted on 9/19/2014)

  • Great! review by mimimum
    5 5 Great!

    Nice double door. Good seal that should last since the door is not flexible. Haven't gone through a winter with it yet but it's bound to be better than the single flexible door flaps I've had in the past.

    (Posted on 8/27/2014)

  • Amazing review by Set Kally
    5 5 Amazing

    Excellent quality~ easy to install~ everything you need is included! Our little guy loves it as much as we do! .

    (Posted on 8/6/2014)

  • Fantastic Product! review by Kansas
    5 5 Fantastic Product!

    This is a quality door and worth the extra money. We have had a single flap pet door for years and it leaked air all around the sides. We would put in a new flap and they would warp in short order. This door seals great and even in cold windy winter conditions it sealed great. I installed the door myself and the instructions were good. Our dachshunds were confused with the extra flap but they finally learned from the cat! Thanks for a great product!

    (Posted on 1/20/2014)

  • Great Door! review by TinyAvenger
    5 5 Great Door!

    Very durable door, easy to install, secure and weatherproof.

    (Posted on 11/19/2013)

  • Works good enough for a 2nd one review by Devin
    5 4 Works good enough for a 2nd one

    I just got a 2nd door, as our first one stayed with our old house. Installation was a pain as it was the first time. It got a lot easier, but still fiddly to install after I re-read the instructions (same as the first one, lol, should remember to read those). Install could be a bit easier, but you only do it once & it's durable once installed.

    On this one I decided not to put in the aluminum panels between the doors & just leave it framed in. Less heat wicking through, but not quite as waterproof. The first door would get a layer of frost on the frame on the inside when it got really cold here (15-20f or so).

    The first one held up pretty well with minimal damage for about 5 years, so I expect this new one to be about the same.

    (Posted on 11/18/2013)

  • Great for Cats! review by Happy in Texas
    5 5 Great for Cats!

    While doing research online before purchasing what is my first pet door, I found a review about a cat owner whose cat had gotten it's paw caught in a regular rigid flap cat door, after trying to back out of her attempt to go through, and couldn't get unstuck. Through her words you could almost hear the howling noises her cat was making and feel the reviewer's relief that this hadn't happened when no one was home to set kitty free. I didn't want that to happen to my cats so I was determined to find a pet door with a flexible flap. The reviews for a common flexible flap doors were anything but encouraging; poor sealing, breakage, and dingy after only a short time. Your flexible flap appeared to be the best option all around, especially for the safety of my cat's paws. My pet door has been in place for about six months now and I have been witness to two episodes of a cat paw caught in the bottom of the flap when she changed her mind about going through and tried to back out; however, no sooner did my kitty begin to panic to the point of a growl she was able to pull herself free, and with no apparent injury to her foot. Such a relief!!

    In addition to the safety issue, I wanted a product that I could trust to last and that I felt I would be happy with as I was installing my door in the side of the house rather than just a door. It just made sense to go with a door that appeared to be of high quality materials, construction, and efficiency that wouldn't need replacing. Your door is all that!

    As I bought your door solely for cats, I followed your website's suggestion about getting a single flap rather than a double and, even though it is mounted on the north side of the house, the door has done very well with keeping out the colder winds that are now occurring with the change of the seasons.

    Though having only owned your pet door for a short time, I have no regrets about paying the higher price and I expect to get my investment back many times over! Thanks!

    (Posted on 11/17/2013)

  • They r great review by Genny
    5 5 They r great

    Kaz and I love these doors made for Alberta weather!

    (Posted on 9/20/2013)

  • endura flap review by den
    5 5 endura flap

    Simple case of you get what you pay for.Expensive but you wont find a better one.

    (Posted on 7/23/2013)

  • Great. Product review by Rick
    5 5 Great. Product

    I have had others before but none comes close to comparing to the dual flap model. It has not let any wind or rain through. Stands up to high winds and blowing rain without leaking,

    (Posted on 6/30/2013)

  • Very nice quality, perfect fit, and function. review by Jamisen F.
    5 5 Very nice quality, perfect fit, and function.

    Just installed the door last night. Pretty easy.
    Good instructions. Nice work putting the 4 inch bolt in the kit to align the 6 inch rods to the threaded holes.
    Very nice quality, perfect fit, and function.

    Nice work, please pass my compliments along to the crew.
    Please advertise.........guys like me NEED your product...not the cheap stuff they sell at home depot.

    (Posted on 7/28/2010)

Weight 10.0000
Manufacturer Endura Flap
Your Maximum Pet Size Cats
Climate Suitability Temperate-3 Season
Employs Patented “Endura Flap” Yes
Flap Material Engage Polyolefin
Ability to Lock Flap Separate Locking Cover-Loads from Top
Can Be Installed In Kennel Wall, Walls
Manufacturer's Restocking Fee 0

Endura Flap Cat Door for Walls Installation Video


Alternate install video: Installing an Endura Flap Pet Door for Walls by Robert Robillard from A Concord Carpenter


Installation Instructions for the Endura Flap Cat Doors for Walls


1x Installation Template • 8x Hole Plugs • 1x Locking Cover 1

2x Frames • 4x Tunnel Pieces • 4x Threaded Rods

1x Tube of Silicone • 1x Jigsaw Blade

Tools you’ll need:

Pencil • Drill with 3⁄8" (9,5 mm) drill bit

Level • Measuring Tape • Jigsaw and/or Reciprocating Saw

Phillips head & Flat head screwdrivers

Rubber Mallet (or hammer + piece of wood).

Safety gear, mask, gloves & clamps recommended.

Please read instructions & notes thoroughly before installation.



1. If you have not yet measured your pet, watch this video to ensure the pet door will work: www.EnduraFlap.com/measure

Tape the provided template onto the wall in the desired location. Use a level to straighten the edges of the template.

The top edge of the cutout should be at least 1 1⁄4" (3,2 cm) above the tallest point of your pet’s back for the single flap, and 2" (5,1 cm) for double flaps.

2. Mark the centers of the four holes using a pencil or nail. Remove the template.

Drill a small hole in the middle to peek into the wall to check for wires/pipes. If you’re clear, move on to the next step to drill through the marked holes.

Professional help is recommended if you are unfamiliar with these processes.

3. Drill the marked 3⁄8” (9,5 mm) holes through the interior and exterior walls. If the drill bit will not go all the way through the wall, you will need to drill through each side separately. (See how on page 6.)

Use a level to make sure your lines will be straight. It is a good idea to remeasure your outline to ensure dimensions are accurate. Then cut the opening out along the lines.

4. Ensure the weather-stripping is firmly pressed in the groove on both frames. 

5. Assemble the tunnel onto the interior frame, without bending tabs, to understand how they will fit together.

Trim the four sheet metal tunnel pieces so that they are 1⁄4“ (0,6 cm) shorter than the thickness of the wall. We recommend using a jigsaw, but you could use other metal cutting tools instead. Be careful to trim the correct side. Do not trim the side of the tunnel pieces that attach to the flap frame.

To reduce vibration, the pieces should be firmly clamped to a piece of wood. See the tips on page 5 for an example.

6.  Bend the frame attachment tabs on the two smaller tunnel pieces 90 degrees upward along the perforations.

Be careful to bend the tabs in the right direction. The tabs will break if bent more than once. Single flap tunnel pieces have a joggle (offset). Bend these tabs as shown with arrow. Tunnel pieces for double flap models can be bent once in either direction.

 7.  Remove the two screws at the top and two screws at the bottom of the Interior Flap Frame (the frame that has a locking cover). If you removed the cover already, the OUTSIDE frame screw holes have threaded nuts in them and you can see them shine.

Attach the smaller tunnel pieces to the top and bottom of the Interior Flap Frame using the two screws.

8. Slide the larger tunnel pieces onto the finger tabs on the small top and bottom tunnel pieces. Bend the finger tabs down as shown. The handle of a screwdriver works well for bending the tabs.

9. Apply a bead of the provided silicone sealant along the inside of the tunnel where it mates with the interior frame, and along the tunnel seams.

10. Place the Interior Frame, with the tunnel attached, into the opening in the wall from the inside of the building. Place the Exterior Frame into the tunnel. A partner can help you hold the Exterior Frame. 

11. Insert the threaded rods with the barrel nuts into the four holes in the Interior Frame (the frame that has a locking cover), and screw the threaded rods into the Exterior Frame finger tight. Check that the pet door is level and tighten the threaded rods until the weather stripping compresses fully. Be careful not to overtighten.

12. With the pet door leveled and all four threaded rods tightened, wiggle the end of the threaded rods that are protuding out of the exterior frame until the ends snap off. If the rods are not long enough to grip, you can use a pair of pliers to bend the rods until they snap off. 

13.Apply a bead of silicone sealant along the inside of the tunnel where it mates with the exterior frame. In addition to sealing inside the tunnel of the pet door we recommend that you also seal the outside frame around the pet door. This is especially important on the exterior frame to prevent any water from leaking into the wall and causing damage. 

14. Tap the hole plugs into the Interior and Exterior Frames. You can use a rubber mallet, wood block and hammer, or a similar non-metal tool.



1. Triple check for studs - check the bottom, the middle, and the top where the cut out would be after hanging the template on each edge including the bottom. Check for baseboard height, we suggest the step over be around 3” - 4” (7 cm - 10 cm) when going through walls, so it may be necessary to trim. Step over height needs will vary based on the pet’s size.

2. Before cutting the entire opening make a small square test hole right at the bottom part of the cut out, roughly 6” by 6” (15 cm by 15 cm).  Use this to take a peek at the interior of the wall to make sure that there isn’t any wiring, plumbing, etc. This way if you do find any obstructions all you have to do is make a small patch to the wall.

3. You can drill through both the interior and exterior wall, but you need a drill bit that is at least 6” - 12” (15 cm - 30 cm) long.  This can be difficult to keep straight and level and having a professional is recommended; a drill with a built-in level would help. An alternative cut method where you cut the inside and outside walls separately is on page 6 (the next page).

4. When installing the weather stripping make sure to not stretch it out, because it compresses over time and you want it to keep the wiggle room.

5. Cut the tunnels one at a time, by clamping them down tightly to a board to avoid vibration. Use a wooden block to guide the jigsaw for a straighter cut.

11. If you do not have a partner to help you guide the rods through the opening to the other frame, you can put your hand through the door and hold a mirror or smartphone facing the hole on the outside to help you see. 


Alternate rough cut method:

This method can be easier in some cases than trying to go through both walls with one pass.

» Drill through the interior wall and draw lines connecting the outside part of the holes.

» Use a hand saw or reciprocating saw to cut out the inside sheet rock along the drawn line.

» Remove any insulation to expose the back of the exterior wall. Measuring very carefully and making sure all is level drill holes from the inside of exterior wall to the outside.

» Tape off the inside opening with a trash bag. This will prevent the dust and debris from going all over and makes clean up much easier.

» Make a mark from the inner side of the drilled holes on the exterior wall. It is a good idea to measure and level your outline from the outside, to ensure your hole will be the correct size.

» Use the pilot holes and a circular saw (use a concrete blade if you have concrete or stucco exterior) to cut out the exterior. Place a piece of cardboard under the saw to prevent it from damaging the exterior.

» Finish the opening with a reciprocating saw and if possible have a spotter inside.



If your wall is over 8” (20,3 cm) thickness, the included tunnel will not be long enough. Your contractor can install the pet door in thicker walls by fabricating a custom tunnel. This can be done by using plywood, sheet metal, brick, or stone to line the cut out.  One frame would be attached to the inside of the house and one frame to the outside. The provided template + instructions might not be accurate in a custom installation. Different hardware* will be required depending on what you are using for the tunnel and how you are mounting the frames to the wall. In all cases it is extremely important to make sure that the tunnel is sealed with silicone or caulking to prevent any damage from water leaking into the wall. 

*Not available through Endura Flap.



You can choose to place the pet door on top of the siding. If you choose this option then you will need to make sure to take care of completely caulking and sealing any gaps that you have to prevent water damage to the wall.

You can also recess the pet door frame into the siding. In this case you would make the recommended rough opening according to the template. Then on the exterior you would cut away the siding only to frame the outside dimension of the pet door. Also be sure to properly caulk and seal around the frame. Some people choose to build a frame to surround the pet door, if you do this, you’ll have to take the same precautions with sealing the wall to prevent water damage.



For help with installation, replacement parts or other questions visit EnduraFlap.com or call 805-781-7700 Monday-Friday 7am-4:30pm PT


Click below to expand:

The simple way is to cut a hole in a piece of cardboard to the 6" x 11" flap size and see if they can get through comfortably.

No the flap is flexible, it is just thicker than typical flaps.

It is kind of like a shower door, so you can see things through it, but can't really make out detail.

It does come with a cover that slides in on the inside.

It is possible that you would need to adjust the magnets for training so check out our videos tab on this page for instruction on how to adjust those.

This is not an electronic door so any pets will be able to go in and out if they push hard enough. In addition it will not prevent any stray and other animals like raccoons from getting in.

The get the door mount version and have your contractor build the tunnel for you.

The flap is on the inside. And the pet door outside frame is designed so that the threshold on the bottom is lower than the one on the inside. This way if you do get any rain in the tunnel the water will evaporate or run out before it runs in.

We do have double flap doors, however they are harder for smaller pets to push through so we don't really recommend them for cats.

It can be a little noisy when it closes, so it might not be the best choice for a bedroom if you kitties go in and out at night frequently.

Yes! It has been tested in temperatures as low as -40° and as high as 110° fahrenheit.

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