Security Boss MaxSeal PRO Pet Door for Doors

$243.99 $304.99

Security Boss MaxSeal PRO Pet Door for Doors

Most Secure Pet Door on the Market

The newly redesigned MaxSeal® PRO pet door for human doors features the newest design and functions available for dog doors. New features include a metal 1" insulated interior security panel that provides the most security of any pet door on the market. The flaps of the MaxSeal® PRO have a unique aluminum hinged connection that allows for the flap movement to swing more freely and eliminates the pinch of the flap when larger dogs use the pet door; resulting in significantly longer flap life.  The MaxSeal® PRO offers the best warranty on the market which covers the door and the flaps for up to 6 years from defect. It also has a 1-year replacement option for dogs that chew or destroy flaps. All Security Boss products are built to order in the USA.

The MaxSeal® PRO for doors is designed to fit on any type of door surface from smooth to panel designs. It will self-adjust to fit door thicknesses of 1 1/4" to 2". The two frames are attached to each other, so from either side one cannot see any attachment screws. Currently the exterior security panel is not available on the Door Model.


  • High-grade aluminum construction
  • Single and Dual flap potions
  • Durable 180-degree hinge-to-flap connection
  • Best in class insulation rating (when dual flap is chosen)
  • 10 sizes and 5 color options available
  • Fits door 1.25-2" thick
  • Custom sizing available
  • Interior security door comes standard
  • Significantly reduces energy loss and drafts
  • 6-year limited manufacturer warranty, includes flaps
  • Made in the USA


Custom sizing available - please contact us for more info

Size Flap Size  Rough Opening   Outside Frame Dimensions Shoulder Height Pet Width Breed Example
5" w x 7 1/2" h

8 1/8" w x 9 5/16" h

9 3/8" w x 10 9/16" h

Up to 7"

Up to 4"
Security Boss Pet Door Small Size Cat Door

Cats (only very small)

Small/ Medium 6" w x 9" h 9 1/8" w x 10 3/16" h 10 3/8" w x 12 1/16" h 9" - 13"
Up to 5"
Security Boss Pet Door Small/Medium Door Size

Most Cats, Chihuahua, Dachshund, Mini Poodle

Medium 9" w x 12" h 11 1/8" w x 13 13/16" h 12 3/8" w x 15 1/16" h 12" - 15"
Up to 8"
Security Boss Pet Door Medium Size Dog Door

Terriers, Pug, Corgi, Shiba Inu

Large 11" w x 16" h 13 1/8" w x 17 3/16" h 14 3/8" w x 19 1/16" h 15" - 20"
Up to 10"
Security Boss Pet Door Large Size Dog Door

Basset, Chow, Keeshond, Husky

Tall 11" w x 20" h 13 1/8" w x 21 13/16" h 14 3/8" w x 2 1/16" h 21" - 24"
Up to 10"
Security Boss Pet Door Tall Large Size Dog Door

German Shepherd, Labrador Retriever

Tall Grand 11" w x 25" h 13 1/8" w x 26 3/16" h 14 1/16" w x 26 9/16" h 25" - 27"
Up to 10"
Security Boss Pet Door Tall Grande Dog Door

Standard Poodle, Irish Setter, Greyhound

XL Grand 12" w x 24" h 14 1/8" w x 25 13/16" h 15 3/8" w x 27 1/16" h 25" - 31"
Up to 11"
Security Boss Pet Door XL Grand Size Dog Door

Afghan, Irish Wolfhound, Borzoi

Wide Tall 15" w x 20" h 17 1/8" w x 21 13/16" h 18 3/8" w x 23 1/16" h 22" - 24"
Up to 14"
Security Boss Pet Door Extra Wide Tall Size Dog Door

Rottweiler, Akita, Bulldog

Mammoth 15" w x 24" h 17 1/8" w x 25 13/16" h 18 3/8" w x 27 1/16" h 25" - 27"
Up to 14"
Security Boss Pet Door Mammoth Size dog door

St. Bernard, Newfoundland

Behemoth 15 3/4" w x 32" h 17 7/8" w x 33 13/16" h 19 1/8" w x 35 1/16" h 25" - 31"
Up to 14"
Security Boss Pet Door Behemeth Size Dog Door

Great Dane, Mastiff, Great Pyrenees


The MaxSeal® pet door is made with high-grade aluminum material that is naturally rust-resistant. This door will not only last but will look great throughout the life of the door. The durable piano-hinged vinyl flaps are UV treated and weatherized to prevent shrinking, cracking, discoloring and warping. Most flap brands simply do not hold up against harsh environments (direct sunlight, extreme temperatures, overuse, etc). Staggered stainless strike plates are riveted to the sides and base of the flap, connecting to powerful embedded magnets in the aluminum frame, creating an exceptional air seal.

6-Year Manufacturer Warranty

Security Boss Pet Door Models, parts and components are guaranteed to be free of defects in material and workmanship under normal use and service for a period of six (6) years from the date of purchase, under the ownership of the original purchaser. Security Boss agrees to replace or repair at their expense if found to be defective in workmanship or material per the schedule Manufacturer's liability on any claim shall not exceed the cost of the product.  See complete warranty details here.

Video Sizing Instructions

Click link below to download the installation instructions:

Door Install Instructions


Security Boss Doors ship from Wisconsin via FedEx Ground

  • Items normally ship in 1-3 business days from date of order, however custom or larger orders can take longer
  • Use the map below to estimate shipping transit time to your location

     Security Boss Pet Doors transit and shipping 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.


    4-Sided Exterior Professional Doors are all made to the customer's specifications, therefore they are non-returnable, non-refundable

    Please see our Return Policy for full details.

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