MaxSeal Flaps

$33.00 - $190.00
(18 reviews)
Current Stock:

MaxSeal Replacement Flaps

Replacement Flaps For MaxSeal Pet Doors

Insulating Flaps to Replace YOur Old MaxSeal Flaps

MaxSeal flaps are specific to size as well as their location of interior or exterior on your pet door. A interior flap will not line up correctly with the magnets of the exterior frame and vice versa. The magnet placement of both the interior and exterior of your pet door are designed to provide you with an optimum seal. Altering the placement of these magnet positions will affect the performance of your door. All Security Boss products are hand built to order.

Replacing your MaxSeal flaps is easy and can be done without removing the pet door frames. Thumbscrews located at the top of the flap can be loosened by hand or by Allen wrench (Provided in your hardware packet when you purchased the door). If you have any difficulty you can place a Flathead screwdriver behind the flap and apply some pressure to allow thumbscrews to catch.

*Note: Thumbscrews & Allen wrench are included with flap purchase


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MaxSeal Flaps

Security Boss Manufacturing LLC


  • 5
    Replacement flaps

    Posted by SR on Mar 12th 2024

    Easy to install. Works fine.

  • 5
    Great Replacement Flaps

    Posted by Cory on Nov 10th 2023

    Flaps arrived on time and were easy to install. We’ve had the Security boss Door for 12 years and this is only the 2nd time we’ve had to replace the flaps. The last set only lasted 3 years compared to 9 years for the first set, but I think it’s probably due to the stronger magnets we added 3 years ago. The stronger magnets keep the wind and cold out in the winter, but probably cause a little more tension on at the top of the flaps at the attachment when the dogs go charging out the dog door at high speed after squirrels. Well worth it to keep the wind and snow out in winter!

  • 4

    Posted by Jim on Nov 1st 2023

    I purchased this to replace my current flap that has worn out after several years. My only complaint is that the price keeps going up when compared to my last purchase of this one year ago.

  • 5

    Posted by Brian Phillips on Nov 24th 2022

    Perfect replacement!

  • 5
    The best pet door

    Posted by Rinat K on Oct 10th 2022

    We had the Security Boss pet door for more than 10 years and this is the 2nd time Im replacing flaps (once every 5 years or so) but this door is solid, secure, weatherproof everything we are looking for

  • 5
    Replacement dog door flaps

    Posted by Daniel on Aug 13th 2022

    Robust design with simple directions for installation. Have always been happy with Boss.

  • 5
    Dog door panel replacement

    Posted by Abby on Feb 6th 2022

    Excellent service and look great!

  • 5
    max seal flaps

    Posted by kathy goldberg on Dec 19th 2021

    first off, we had a security boss pet door installed in our sliding glass door 6 years ago and while it was an investment because good things are worth paying for, it wasn't until just now that we needed/wanted to replace the outer flap. We replaced it more because of atheistics, it is of course out facing the elements for the past 6 years, it had not worn out.. this system works all day every day as my dogs come and go. The large thick magnets mean it catches and shuts every single time! can't recommend this doggie door more.

  • 5
    Great fit

    Posted by Unknown on Dec 13th 2021

    As described