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Behemoth MaxSeal for St. Bernard Custom Door for 260lb. Mastiff

Large and Giant Breed Dog Doors

Extra Large and Giant Breed dog doors are not as common as the smaller sizes. For those customers who have giant breed or even extra large dogs, you know how important it is for an adequately sized pet opening. Our larger friends tend to get arthritis and hip ailments more easily, not to mention aggravating injuries that can become more serious. A dog door that is large enough to provide enough room to navigate freely through the opening minimizes injuries and provides your dog freedom even in their later years.

You will want a dog door that when installed will be mounted high enough that the top of the opening will be 1.5 to 2" higher than your dog's back. The bottom of the pet opening should be low enough to the ground so that they can easily step through without dragging their legs or having to step too high. If the pet opening is not adequate enough for their size, then you will run the risk of your dog incuring injuries as they use the small opening. These injuries tend to develop into larger problems, especially among the larger breed dogs.


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MaxSeal Door Mount Model MaxSeal Door Mount Pet Door

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Best Insulating, Best Sealing
Most Secure, Highest Rated
10 Sizes, Small to Behemoth
Fits Doors 1 1/4" - 2"
$128 - $530
5 Star Rated Pet DoorInsulated Pet Door

MaxSeal Wall Mount Model MaxSeal Wall Mount Pet Door

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Best Insulating, Best Sealing
Most Secure, Highest Rated
10 Sizes, Small to Behemoth
Walls: 2" - 10"
$182.40 - $746.16
5 Star Rated Pet DoorInsulated Pet Door

Custom MaxSeal Door Mount Pet Door Custom MaxSeal Door Mount

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Best Insulating & Sealing, Most Secure
Custom Made Sizes
Replace Existing Doors
Fits Doors 1 1/4" - 2"
$155 - $650
5 Star Rated Pet DoorInsulated Pet Door

Custom MaxSeal Wall Mount Pet Door Custom MaxSeal Wall Mount

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Best Insulating & Sealing, Most Secure
Custom Made Sizes
Replace Existing Doors
Walls: 2" - 10"
$200 - $725
5 Star Rated Pet DoorInsulated Pet Door

SB72 Door Mount Dog Door SB72 Door Mount Dog Door

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Below 45 degree Environments
Chew Proof Exterior Door
5 Sizes
Fits Doors 1 1/4" - 2"
$279 - $550
5 Star Rated Pet DoorInsulated Pet Door

SB72 Wall Mount Dog Door SB72 Wall Mount Dog Door

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Below 45 degree Environments
Chew Proof Exterior Door
5 Sizes
Walls: 2" - 10"
$329 - $637
5 Star Rated Pet DoorInsulated Pet Door

SB Standard Wall Mount Pet Door SB Standard Wall Mount Pet Door

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Highest Rated Utility Model
Heavy Duty Alum. Frame
4 Sizes
Walls: 2" - 10"
$151 - $219
3 Star Rated Pet Door

Solo Automatic Pet Door for Dogs & Cats Solo Automatic Pet Doors

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Considered Best Electronic
Proven Raccoon Proof
10 Sizes,
Fits Doors & Walls
$395 - $1195
5 Star Rated Pet DoorElectronic Pet Door

SB Standard Door Mount Pet Door SB Standard Door Mount Pet Door

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Highest Rated Utility Model
Heavy Duty Alum. Frame
4 Sizes
Fits 1 1/4" - 2"
$100 - $150
3 Star Rated Pet Door

Custom SB Standard Door Model Pet Door Custom SB Standard Door Model

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Highest Rated Utility Model
Custom Made Sizes
Replace Discontinued Doors
Fits 1 1/4" - 2"
$102 - $172
3 Star Rated Pet Door

Saloon Dog Door Saloon Dog Door

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Unique Side Hinged Doors
Insulated Panels
4 Sizes
Doors: 1 3/4"
Walls: 4 3/4" - 8 1/2"
$279.99 - $639.99
3 Star Rated Pet DoorInsulated Pet Door

Aluminum Dog Door Aluminum Dog Door

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Aluminum Swing Door
Insulated Door
4 Sizes
Doors: 1 3/4"
Walls: 4 3/4" - 8 1/4"
$209.99 - $459.99
3 Star Rated Pet DoorInsulated Pet Door

Lexan Dual Pane Dog Door Lexan Dual Pane Dog Door

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Dual Pane Top Hinged Door
Insulated Door
4 Sizes
Doors: 1 3/4"
Walls: 4 3/4" - 8 1/4"
$189.99 - $424.99
3 Star Rated Pet DoorInsulated Pet Door

Ideal Ruff Weather Pet Door Ideal Ruff Weather Pet Door

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Utility Dual Flap
Plastic Frame
4 Sizes
Doors: 1 1/4 - 1 3/4"
Walls: 4 3/4" - 7 1/4"
$83 - $258.50
3 Star Rated Pet DoorInsulated Pet Door

SB Standard Patio Pet Door Insert SB Standard Patio Pet Door Insert

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Single Pane - Single Flap
Fits Heights 70" - 99"
Built in Weather Seal
Rated Best Utility Model
$183 - $367
4 Star Rated Pet Door

Giant Breed Patio Insert | Big Dog  Patio Insert for Sliding Glass Doors Giant Breed Patio Pet Door

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Single Pane - Single Flap
Fits Heights 70" - 99"
Design for BIG DOGS &
Great Danes
Rated Best Utility Model
$338 - $390
4 Star Rated Pet Door

MaxSeal Patio Pet Door Insert - Dual Flap | Dual Pane Glass MaxSeal Patio Pet Door Insert

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Dual Pane - Dual Flap
Fits All heights 70" - 99"
Built in Weather Seal
Best Insulating Unit
$471.72 - $833.71
5 Star Rated Pet DoorInsulated Pet Door

Insulated Patio Cat Door - Dual Flap | Dual Pane Glass Insulated Patio Cat Door

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Dual Pane - Dual Flap
Fits All heights 70" - 99"
Built in Weather Seal
Best Insulating Unit
Starts at $424.32
5 Star Rated Pet DoorInsulated Pet Door