Petoasis 3-Flap Aluminum Dog Door Large
- Large for door, fits door thickness up to 2.4 inches
- 100 pound weight capacity for large breed dogs
- Three flaps with magnetic closure to block wind and rain
- Rust proof aluminum alloy frame in silvery white
- Magnetic closure reseals the flaps after each pass
- Not smart home compatible, no app or sensor control
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A rust proof aluminum door with three magnetic flaps for a large dog and a door up to a set thickness. It is not a smart door, so nothing opens on its own.
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ASIN: B0CWNGMZXFModel: DDM01Category: Dog Gates
Overview
A door in a home with a large dog gets cut, fitted and sealed around this aluminum unit. The frame carries three flaps in a stack, and magnets pull each flap shut after the dog pushes through, so wind, snow and rain meet a closed layer instead of an open hole. The aluminum alloy resists rust where weather hits the exterior face.
A large dog that goes in and out all day is the reason to cut this into an exterior door, and the triple flap stack is what holds weather back once the dog is through. The frame is aluminum, so rain and snow do not start rust. It has no motor, sensor or app, so a dog that cannot push a flap open gets no help, and the listed door thickness is the limit for the cut.
Who it's for
Homes with a large breed that already pushes through flaps and needs the opening to stay shut against wind and rain. Owners of small or timid dogs should look elsewhere, and anyone wanting app control or automatic opening will not find it here.
Pros and cons
- Three flaps stacked against weather
- Magnetic closure reseals each flap
- Aluminum alloy frame resists rust
- Holds up to a large breed
- No smart home or app control
- Overall frame dimensions not listed
- Opening width and height not listed
- No mounting hardware listed
Performance notes
Weather blocking comes from the flap stack and the magnets that pull each layer closed behind the dog. The aluminum frame carries the load and resists rust on the exterior face. How well it seals depends on the cut fitting the door and the flaps hanging free, and the listed door thickness is the limit for the frame depth.
Specifications
| Brand | [Petoasis] |
|---|---|
| Model | DDM01 |
| Dimensions & fit | |
| Size | Large For Door |
| Dog Breed Size | Large |
| Weight Capacity Maximum | 100 pounds |
| Construction & materials | |
| Material Type | Aluminum |
| Frame Material | Aluminum |
| Color | Silvery White |
| Compatibility & installation | |
| Maximum Compatible Thickness | 2.4 incheshigher than 75% of 21 dog gates |
| Smart Home Compatibility | Not Smart Home Compatible |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Closure Type | Magnetic |
| Pet Type | Dog |
| Asin | B0CWNGMZXF |
| Best Sellers Rank | #5,400 In Pet Supplies (See Top 100 In Pet Supplies) #6 In Dog Doors |
| Manufacturer | Petoasis |
| Model Number | Aluminum Dog Door |
| Manufacturer Part Number | DDM01 |
| Customer Reviews | {'ratings_count': '1,065', 'stars': '4.6'} |
| Target Audience | Dogs |
Closest rivals on specs
PetSafe Never Rust Plastic Pet Door Large- Maximum Compatible Thickness 2.4 vs 2 inches (+20%)
PetSafe Never Rust Electronic Pet Door- Maximum Compatible Thickness 2.4 vs 2 inches (+20%)
Frequently asked questions
Is the Petoasis aluminum dog door a smart door?
No. The listing states it is not smart home compatible, so there is no app, sensor or automatic opener. The dog pushes the flaps and the magnets pull them shut.
How many flaps does the Petoasis dog door have?
Three flaps. They stack in the frame, and the magnetic closure pulls each one closed after the dog passes through, which is what blocks wind, snow and rainwater.
What door thickness does the Petoasis large dog door fit?
The listed maximum compatible thickness is 2.4 inches. A thicker door is beyond what the frame is stated to fit.
Does the three flap design work in snow and rain?
The listing describes the flaps and magnetic closure as blocking wind, snow and rainwater intrusion. Sealing still depends on the cut fitting the door and the flaps hanging free.
Is mounting hardware included with the Petoasis dog door?
The listing does not name any included mounting hardware, so check the box contents before you start the cut.