MaxSeal Door Mount Pet Door

$202.86 - $669.99
(5 reviews)
Current Stock:


MaxSeal Door Model Pet Doors

The Best Pet Doors by Design

The MaxSeal Door Model pet door offers you the ultimate in pet door design. We use only the highest quality components to fabricate one of the industry's best selling, high performance pet doors for walls. All Security Boss products are hand built to order.

The MaxSeal is designed to provide the very best in an insulating seal and home security when locked off. There are 10 different sizes, allowing you to customize the size to any type of pet or situation. We also offer 10 different frame colors and two security panel colors to match or augment nearly any home decor.


Security Boss is setting the standard for pet doors in terms of pet door quality. Customers can customize their door with several options that make each pet door unique for their home. Whether it be the direction the security panel loads, the color options, high wind accessory magnets for very challenging environments or the option to get a door that will accommodate an aging pet with arthritis, Security Boss offers our customers the most flexibility and the best performing product in the shortest amount of time.


Flap Size
Cut in Door
Exterior Frame
(overall frame size)
(w x h)
Single Flap
Dual Flap
6"x 7 1/2"
8" x 9 3/16" 9 3/8 x 10 9/16" $160.99 $220.02
7"x 9"
9" x 10 11/16" 10 3/8 x 12 1/16" $191.99 $231.99
9" x 12"
11" x 13 11/16" 12 3/8 x 15 1/16" $236.99 $270.99
11" x 16"
13" x 17 11/16" 14 3/8 x 19 1/16" $293.99 $344.99
11" x 20"
13" x 21 11/16" 14 3/8 x 23 1/16 $339.99 $402.99
Tall Grand
11" x 25"
13" x 26 11/16" 14 3/8 x 28 1/16" $392.99 $445.99
XL Grand
12" x 24"
14" x 25 11/16" 15 3/8 x 27 1/16" $427.99 $496.99
Wide Tall
15" x 20"
17" x 21 11/16" 18 3/8 x 23 1/16" $460.99 $528.99
15" x 24"
17" x 25 11/16 18 3/8 x 27 1/16 $489.99 $570.99
15 3/4" x 32"
17 3/4" x 33 11/16" 19 1/8 x 35 1/16" $549.99 $669.99

Note: The Black Security Panel has a Black interior as shown above, the exterior is white to reflect sunlight and heat.
The White Security Panel is White on both sides.


High performance pet door made for installation in all types of DOORS

Security Boss Manufacturing LLC - Best Pet Doors by Design

Pricing Starts at: $160.99
MaxSeal Door Model Product Video


Congratulations on your purchase of a MaxSeal Door by Security Boss.

Click to view PDF
MaxSeal Door Model Pet Door

Click Here for Instructions in PDF format

Always wear eye protection and gloves when appropriate.

The Security Boss Manufacturing Door Mount model includes a Protective Rain Guard Attachment. This rain guard is meant to be mounted on the top exterior frame section of a pet door. Follow the steps below in Section A to install the Protective Rain Guard properly on a new pet door, Once the Protective Rain Guard is properly attached, follow the remaining instructions for installation of the door. If you choose not to use the Protective Rain Guard, skip to Section B.

Section A: Protective Rain Guard Attachment

It is best to affix the Protective Rain Guard to the Exterior Frame before mounting the exterior frame to the mounting surface. Follow steps, 1, 2, 3 and 4, and then complete the pet door installation according to the Manufacturer's instructions for sealing the pet door.

Step 1: Be sure that you have the correct length of Protective Rain Guard for your particular door before proceeding to Step 2. To determine the correct length, measure the outside edge of the pet door frame across the top horizontal section. This measurement will be the length of the Protective Rain Guard.

Tools You May Need:
Flat tipped screw driver
Scissors or Snips
Utility Knife
Silicone Sealant

Step 2: If necessary, use Scissors or Snips to cut the Protective Rain Guard to the length of the top horizontal frame piece. Cut the fin with the Utility knife first then cut the metal reinforced C Channel. It is easiest the cut between the metal reinforcing ribs.

Step 3: Push the legs of the Protective Rain Guard mounting channel onto the top horizontal edge of the Exterior Pet door frame. If the mounting channel is not gripping the pet door frame tightly, remove the Protective Rain Guard and use a pliers the gently compress the C Channel on the Protective Rain Guard. Then reapply the Protective Rain Guard to the Frame.

Step 4: Once you have verified that the Protective Rain Guard is seated fully on the edge of the pet door frame, your Protective Rain Guard is installed.

Section B: Door Installation

Step 1: Be sure that you have ordered the correct size door for your pet. For long term use it is best to size the pet door so that the top of the door is about 2 inches taller than your pet's shoulders. The resulting bottom of the opening should be a comfortable step over height.

Step 2: Check the package you received to make sure that it contains all the necessary parts.

Complete Kit includes:
MaxSeal Door Model
Insulated Security Panel with replacement rivets
1-1/4 inch #6 Phillips Head Screws
1-1/4 inch #6 Security Screws for Tamper proof installations
7/64 inch drill bit
Allen Wrench

Tools Needed:
Saw (Reciprocating or Jigsaw)
Electric Drill
(Drill Bit large enough to create a start hole for the saw)
Phillips Head Screw driver
Standard Head Screw Driver (for Security Screws)

Step 3: Find a suitable area for your door mount model. Door models have an Insulated security panel that lifts out vertically (side loaded panel models are available as needed). Make sure there is adequate room for removal of this Panel. Try to position the location of the rough opening such that it is no closer to the edge of the door than 3 inches to maintain structural strength within the door.

Step 4: Trace the flange of the MaxSeal door using a pencil. Use the dimension of the flange perimeter to determine the dimension of the rough opening.

You May also use the following rough-cut dimensions below:

Rough-Cut Dimensions
Based on door sizes


Rough Cut Required

(6 x 7 1/2)

8 x 9 3/16

(7 x 9)

9 x 10 11/16

(9 x 12)

11 x 13 11/16


(11 x 16)

13 x 17 11/16

(11 x 20)

13 x 21 11/16

Tall grand
(11 x 25)

13 x 26 11/16

XL Grand
(12 x 24)

14 x 25 11/16

Wide Tall
(15 x 20)

17 x 21 11/16

(15 x 24)

17 x 25 11/16

(15 3/4 x 32)

17 3/4 x 33 11/16

The above measurements are exact dimensions, you may add slightly depending on the accuracy of your cut.

Step 5—WOOD DOORS: For wood doors, drill out two corners diagonal from each other using a 7/8 inch paddle bit or a 5/16 inch regular bit. If you use a regular bit, drill three holes close together then elongate the holes until you have connected the three holes. This will allow insertion of the reciprocating saw blade. Cut out the rough opening along the traced lines.

Step 5—METAL DOORS: For metal doors, follow the above directions for wood doors, using an appropriate blade made for cutting metal.

Step 6: Separate the Interior and exterior door frames. Remove the Insulated Security Panel from the inside frame.

Step 7: Put the inner frame (the one with the insulated security panel) into the rough opening in the people door. Snap the outside frame into MaxSeal door and sleeve the pet door frame together.

Step 8: Using the pre-drilled pilot holes and supplied drill bit, drill and insert one screw. Make sure the door is level. When level, tighten the inserted screw. Affix remaining screws into place using the pilot holes as guides. (Security Boss Manufacturing has included One-Way Security Screws as well as Philips head screws to give customers a Tamper-proof option in their door installation.)

Step 9: Once the pet door is installed you can fill any gaps or seal the edges with caulking if desired.

General Use Information: The Insulated Security panel will slide into place and fasten with the dead bolt lock. When removing the Security panel from the unit, apply a slight inward pull to the panel handle while lifting. Since the panel is tight fitting in the channel, this pulling pressure will ensure that the panel rivets do not catch on the frame of the unit.
The dead bolt is retracted by pulling on the handle and turning the handle Clockwise, or Right, approximately a quarter of a turn. To lock the deadbolt, continue to turn the handle of the deadbolt another quarter turn and the lock will extend into the locked position under spring tension. DO NOT TURN THE HANDLE OF THE LOCK COUNTER CLOCK WISE OR LEFT, AS THE LOCK WILL LOOSEN AND NOT WORK.

Replacement rivets have been included with your hardware kit should the ones on the MaxSeal Insulated Security panel work loose. Install by pressing the two pieces together from opposite sides of the panel in the pre-drilled holes. The Thumbscrews that attach the flaps are factory tightened. Through use, the thumbscrews occasionally loosen and therefore should be checked regularly for tightness. Retighten the thumbscrews using the included Allen wrench.

The magnets on all MaxSeal doors are adjustable. This allows a precise seal no matter the weather or size of the flap throughout the years. The magnets are positioned in the frame with a pressure fit. The Magnet is held by an aluminum carrier that can slide in and out of the painted frame rail. The best way to lift the magnet is by using pliers to lift the magnet out of the frame rail. BE SURE TO COVER THE MAGNET AND CARRIER WITH A TOWEL TO PREVENT SCRATCHING OF THE FRAME AND CARRIER. Only lift the magnet the minimum required to make the magnet touch the strike plate on the flap. If the Magnet Carrier becomes loose within the frame after adjustment, simply pry the two legs of the magnet apart and reinsert into the frame rail. The magnets are adjusted correctly when there is zero airspace between the magnet and the strike plate. Once the magnets are positioned properly, your replacement flaps is installed.

You have now installed your new MaxSeal Door.


Child Safety:
Security Boss Manufacturing, LLC., recommends that households with small children need to exercise proper judgment with leaving their children unattended in any area with a pet door. Pet Doors come with locking panels and locking devices, using these devices minimizes any risk, but does not replace proper parental supervision.


We recommend that any consumer that installs their own pet door wear eye protection and be familiar with the construction procedures and tools of installing a pet door.

Virtually all doors use magnets for the activation of the pet door as well as in the sealing of the flaps. Customers with certain medical devices, for example; Pace Maker patients, should consult their physician.

Self Adjusting Fit
Accommodates Doors 1 1/4" - 2" thick


  • 5

    Posted by Jesse Lennon on Apr 1st 2023

    My mom has had this dog door for 10+years and it's as good as new. We had to buy a new one because we added a bigger dog to the family. Super satisfied with this company.

  • 5
    Quality product

    Posted by Martin's Handyman on Jan 12th 2022

    Fast shipping , quality product , easy install .

  • 5
    MaxSeal Door Mount Pet Door

    Posted by JimB on Oct 21st 2021

    Installed easily and looks great in door. Did not take my dog long to understand how to use and allows her more freedom to chase squirrels in the back yard. Very sturdy construction and expect many years of excellent service.

  • 5
    Best of the best - Max seal door mount pet door

    Posted by Jim Donati on May 26th 2021

    Quality pet door.

  • 5
    Great doggie door!

    Posted by Bart Arntz on Feb 19th 2021

    The Maxseal Pet Door has been a very successful product for our company. Well built, strong, secure, accurate sizes. Never a problem.