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Large and Giant Breed Dog Doors

Ideal Deluxe Aluminum Frame for doors Custom Door for 260lb. Mastiff 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.

The correct size of a dog door depends on the size of your dog. Sounds easy enough, but this is how we recommend you visualize the pet opening in relation to your dog's height.

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 inuring injuries as they use the small opening. These injuries tend to develop into larger problems, especially among the larger breed dogs.

The following dog doors we show as having larger sizes vary dramatically in quality. You will find high performance doors like the MaxSeal and utility doors like the SB Standards. Evaluate where you will be installing this pet door. Is it going directly to the outside? What types of weather do you get as extremes? Is a bug-proof or draft proof door desired? These questions will help you decide on the quality of the door that is right for you. Finally but very important; Do you want to lock off the pet door securely..for example if going on vacation?

Moore Pet Supplies recommends the Security Boss MaxSeal doors for all the reasons mentioned above. Because you are dealing with a larger pet opening to begin with, lesser quality doors tend to do very little in protecting you from the outdoor element and they tend to be very inefficient when locking. The MaxSeal is the best sealing dog door for hot or cold weather, provides the best protection from drafts and bugs. The insulated security panel is the strongest in the industry. There is not other dog door that will lock and provide the same security as the MaxSeal.


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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"
$160 - 605
5 Star Rated Pet DoorInsulated Pet Door

Security Boss Pet Screen Door - Sliding Screens Security Boss Pet Screen Door

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5 Star Rated Pet Door
Our Price: $105.00 - $185.00

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 - $570
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 - $665
5 Star Rated Pet DoorInsulated Pet Door

SB4 Pet Screen Door SB4 Pet Screen Door

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5 Star Rated Pet Door
Our Price: $120.00 - $195.00

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 - $534
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"
$319 - $590
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"
$141 - $209
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

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"
$77 - $258.50
3 Star Rated Pet DoorInsulated Pet Door

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

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Single Pane - Single Flap
Fits Heights 77" - 99"
Built in Weather Seal
Rated Best Utility Model
$173 - $357
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 77" - 99"
Design for BIG DOGS &
Great Danes
Rated Best Utility Model
$273 - $380
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 77" - 99"
Built in Weather Seal
Best Insulating Unit
$471.72 - $833.71
5 Star Rated Pet DoorInsulated Pet Door

PetSafe Electronic - Security Boss Single Pane Patio Pet Door PetSafe Electronic - Security Boss Single Pane Patio Pet Door

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Single Pane - Electronic
Fit Heights 70" - 99"
Let Dog Out - Keep Cat In
$305.04 - $441.99
4 Star Rated Pet DoorElectronic Pet Door

PetSafe Electronic - Security Boss Dual Pane Patio Pet Door PetSafe Electronic - Security Boss Dual Pane Patio Pet Door

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Dual Pane - Electronic
Fit Heights 70" - 99"
Let Dog Out - Keep Cat In
$350.04 - $491.99
4 Star Rated Pet DoorInsulated Pet DoorElectronic Pet Door