Endura Flap Door Mount Cat & Dog Door

$289.99 $333.49

Endura Flap by Patio Pacific - Door Mounted Cat & Dog Door

The Endura Flap™ Pet Door is designed to be installed in doors, including solid core, hollow core, panel, metal and storm doors.  The Endura Flap dog door utilizes the best pet door flap in the industry making it the number one choice pet door for extreme weather.  The state of the art flap technology gives Endura Flap dog doors the ability to combat 50mph winds and -40 degrees Fahrenheit temperatures.  You will not have to worry about energy loss or temperature fluctuation inside your home. If you live in an area with a severe climate, we recommend choosing the double flaps.  Designed and built in the USA using environmentally friendly, high insulation value polyolefin polymer flap material to save energy and insulate your home. 

Single Flap or Double Flap? The double flap option provides more insulation for your home, perfect for climates that experience extreme hot or cold weather. Recommended for doors that go outside the home.

  • Can be installed in all types of doors: solid core doors, hollow core doors, metal doors, storm doors, paneled doors, french doors
  • Self-framing: For doors between 1/2"- 1 3/4" choose the single flap option and for doors 1 3/4"-2 1/4" choose the double flap option (adjusting the single flap to less than 1 3/8" requires cutting the trim frame with a jigsaw)
  • 3 frame colors: white, black, or tan
  • 4 sizes available, each in double or single flap
  • Extremely energy efficient
  • Works in up -40 degrees Fahrenheit and 50mph winds
  • Dual-paned flap with a complete magnetic seal for an unbeatable insulation value and weather resistance ensures that the flap won't blow up in heavy winds
  • Option to add or decrease magnet strength, perfect for training pets or increasing already significant wind resistance
  • Secure, protective locking cover included
  • 15-year manufacturer warranty
  • Made in the USA

    Size Chart

    Flap Size Flap Dimension Rough Cut Out Outside Frame Dimension Flap Type
    Small 6" w x 11" h 8 5/8" w x 15" h 9 7/16" w x 16" h Single
    6" w x 10" h Double
    Medium 8" w x 15" h 10 5/8" w x 19" h 11 1/2" w x 20" h Single  
    8" w x 14" h Double
    Large 10" w x 19" h 12 5/8" w x 23" h 13 9/16" w x 24" Single
    10" w x 18" h Double
    Extra Large 12" w x 23" h 14 11/16" w x 27 1/8" 15 5/8" w x 28" h Single
    12" w x 22" h Double

    Note: Endura Flaps™ are not recommended for use by kittens or very small dogs. Cats have been successful using the Small #06, however a few have found the Medium #08 difficult to use. We would not recommend using the Large #10 or Extra Large #12 or any of the double flap versions for cats.

    15-Year Manufacturer Warranty

      Endura Flap assemblies are warranted for a period of 15 years to the original purchaser. Endura Flap assemblies employed in commercial kennels are warranted for a period of 3 years.  Damage caused by accident, improper installation, abuse or normal wear, including damage by pets or glass breakage is specifically excluded from this warranty.

      • Frame Material - Heavy Extruded Aluminum
      • Flap Material - Engage Polyolefin
      • Flap Color - Clear
      • Flap Thickness - 7/8"
      • Locking Cover Material - Dimensional ABS
      • Climate Suitability - Severe-4 Season
      • Flap Design: Single, Double
      • Ability to Lock Flap - Separate locking Cover, loads from Top
      • Can Be Installed In Kennel Walls, Residential Walls
      • Sealing Value - Very High
      • Wind Resistance - Very High
      • Self Framing - Yes
      • Replacement Flaps Available - Yes
      • Insulation Value - High, Very High
      • Wall Thickness Range - 2" - 8
      • Warranty Period - 15 years
      Use the instructions below to find the correct sized pet door for your cat or dog. Having issues figuring it out, no problem,  contact us NOW and let one of our trained experts assist you!

      Endura Flap measuring guide for dog doors


      How to Measure Your Pet

      There are two measurements to consider when choosing the correct size door for your pet, the following guidelines will help you get accurate measurements.  If you get stuck or need any help please contact us, our experts are ready to help.

      A - Measure Height  The pet door flaps should be at least an inch or two above the top of your pet’s back not the head. To get this length, measure your pet from the withers (top of the shoulders) to the floor. Remember that your door won’t be placed completely at floor level.

      B - Measure Width – Simply measure your pet at the widest point and add an inch or two for safety. If your pet is long-haired, don’t forget that this may make them appear wider than they really are. Alternately, you can open a door just wide enough for your pet to pass through and measure the width of the opening, again adding an inch or two for safety.

      Hale Pet Door measurement guidelines

      Alternate method: You can also make a sample door opening out of a large piece of cardboard based on the above size chart. Place it in a door opening and experiment with height placement. Order the size most comfortable for your pet.

      Video Demonstration:

      Size Chart

      Flap Size Flap Dimension Rough Cut Out Outside Frame Dimension Flap Type
      Small 6" w x 11" h 8 5/8" w x 15" h 9 7/16" w x 16" h Single
      6" w x 10" h Double
      Medium 8" w x 15" h 10 5/8" w x 19" h 11 1/2" w x 20" h Single  
      8" w x 14" h Double
      Large 10" w x 19" h 12 5/8" w x 23" h 13 9/16" w x 24" Single
      10" w x 18" h Double
      Extra Large 12" w x 23" h 14 11/16" w x 27 1/8" 15 5/8" w x 28" h Single
      12" w x 22" h Double

      Endura Flap Pet Doors Ship from California via FedEx Ground

      • Doors normally ship 2-3 days from California
      • Transit time to you can be found using the map below.

      Endura Flap US Shipping Transit Map

        Fast Shipping

        We do our best to ship FAST and make it easy for you.  At the top of this page, we have noted how long it normally takes to process and ship your order.  You can then use the map above to estimate delivery times.  We will send you an email confirmation with the tracking number as soon as your order ships

        Please see our Shipping Policy for full details.

        Easy Returns

        Things don't always work out, we get it.  We'll do our very best to make your return simple and easy.  Please email us and we'll provide all the return instructions for your specific item and an RMA number (required).

        Please see our Return Policy for complete details.

        How to install your Endura Flap Door Model

        Tools Required

        • Pencil
        • Drill with
        • 3/8 inch drill bit
        • Level
        • Jigsaw or reciprocating saw
        • Phillips head screwdriver
        • Please read the instructions thoroughly before beginning installation

        Please read the instructions thoroughly before installation.



        Step 1: Tape the provided template to the door. The top edge of the cut-out line should be 1-1/4 inch (or more) above the dog™s withers (shoulders) for the single flap door mount, and 2 inches for the double flap door mount. Be careful not to unduly reduce the strength of the door by cutting too close to the bottom of the door.

        Step 2: Mark the hole centers for the four holes and remove the template.

        Step 3: Drill the four 3/8 inch holes.

        Note: Drill bit needs to be long enough to go through the interior and exterior of the door. It should be both level and straight when making the holes to ensure the two frames will align properly.

        Step 4: Draw lines to connect the outsides of the holes using a straight edge, as shown on the template.

        Step 5: Cut along the line as shown in Figure 3.

        Note Jigsaw needs to be level and straight when cutting the lines to ensure the two frames will align properly.

        Step 6: Install the weather-stripping into the groove on both frames with the start /end gap at the bottom.

        Step 7: If a single flap door mount, place the pet door trim frame on the outside of the door and the flap frame on the inside and skip to Step 14.

        Step 8: If a double flap door mount, assemble the four-piece tunnel by first bending the screw tabs down as shown in Figure 4 in the top and bottom tunnel pieces (the two identical shorter pieces).

        Note Only bend the tabs once, bending more than once may result in the tabs breaking off.

        Figure 5: Remove the four flap assembly screws

        Step 9: Remove the screws in the four corners of the flap frame assembly as shown in Figure 5.

        Step 10: Place the top piece on, with the bent tabs down and align the top piece so the holes in the tabs line up with the screw holes in the flap frame and screw in as shown in Figure 6. Repeat for the bottom piece.

        Step 11: Slide in the tunnel side pieces as shown in Figure 7.

        Step 12: Bend the tabs down with your thumb or a screwdriver handle.

        Step 13: Place the flap frame with the tunnel attached on the inside and the other flap frame outside.

        Step 14:  Select the 2-1/4 inch set of screws for 1-3 /4-inch doors and the shorter set for 1-3/8 inch doors. Insert these into the pet door from the inside. For doors with a thickness of less than 1-3/8 inch, see special instructions. For doors between 1-3/4 inch and 2-1/4 inch with the double flap door mount, use the 2-3 /4-inch screws.

        Step 15: Start all four screws, as shown in Figure 8, but do not tighten.

        Step 16: Before tightening down the screws, check that the pet door is level and adjust as needed.

        Step 17: Tighten the screws until the weather-stripping compresses, and the pet door touches the door. Do not overtighten.

        Step 18: Hammer the hole covers into the frame using the wooden end of a hammer (or similar non-metal tool).

        Step 19: For double flap door mounts, apply silicone along the inside of the tunnel where it mates with the flap frames to seal your pet door from the elements. Failure to seal your pet door can lead to severe water damage.


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