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![[Petoasis] 3-Flaps Heavy-Duty Dog Door for Wall.Rustproof Aluminum Frame | Energy-Efficient.Thick Flaps Block Wind Snow Rain Intrusion in Extreme Weather (Silvery White. Large for Wall)](/wp-content/uploads/2026/08/VX-187582-7b7e_1.jpg)
![[Petoasis] 3-Flaps Heavy-Duty Dog Door for Wall.Rustproof Aluminum Frame | Energy-Efficient.Thick Flaps Block Wind Snow Rain Intrusion in Extreme Weather (Silvery White. Large for Wall)](/wp-content/uploads/2026/08/VX-187582-7b7e_2.jpg)
![[Petoasis] 3-Flaps Heavy-Duty Dog Door for Wall.Rustproof Aluminum Frame | Energy-Efficient.Thick Flaps Block Wind Snow Rain Intrusion in Extreme Weather (Silvery White. Large for Wall)](/wp-content/uploads/2026/08/VX-187582-7b7e_3.jpg)
![[Petoasis] 3-Flaps Heavy-Duty Dog Door for Wall.Rustproof Aluminum Frame | Energy-Efficient.Thick Flaps Block Wind Snow Rain Intrusion in Extreme Weather (Silvery White. Large for Wall)](/wp-content/uploads/2026/08/VX-187582-7b7e_4.jpg)
![[Petoasis] 3-Flaps Heavy-Duty Dog Door for Wall.Rustproof Aluminum Frame | Energy-Efficient.Thick Flaps Block Wind Snow Rain Intrusion in Extreme Weather (Silvery White. Large for Wall)](/wp-content/uploads/2026/08/VX-187582-7b7e_5.jpg)
About this item
- Unlock Full Freedom for Your Pup with This Doggy Door: Enter/exit anytime without waiting for potty runs or playtime! Let furry friends manage their schedules. cutting your daily hassle while keeping them happy. active. and fulfilled
- Additional service: If your pet has damaged a flap. you can get a flap afterwards. which can save you 25 in the future. making it perfect for adventurous large dogs
- Triple-Flap Weatherproof Dog Door: Ruff weather rated! Locks out extreme heat. cold. and moisture for all climates. Boosts energy efficiency. keeping your home cozy year-round while slashing energy waste
- Heavy-Duty Aluminum Dog Door: Full aluminum alloy + thickened metal frames—rust-proof. scratch-resistant. and sturdier than thin iron/plastic-aluminum options. Built tough for active pups’ daily use
- Patented Doggy Door Style + Easy Install: Exclusive designer-patented look seamlessly complements any decor. Includes all hardware & step-by-step instructions for hassle-free setup. Responsive support—more than a dog door. a cozy upgrade for your furry family
3 Flaps of Insulation Material
The 3 flaps structure contains insulation material inside. which can effectively help you save energy in winter or summer.All 3 flaps can be disassembled separately for weaker dogs to pass through.
Weatherproof Door Flap
Magnetic door flaps are used for quick closure after dogs pass through. Through our experiments. thick and magnetic door flaps can withstand 95% of wind and rain weather.
Internal/external Panel.
Dog door contains two door panels for locking. Others cannot open the internal door panel outside the door without damaging it.
Thickened Aluminum Alloy
Most other brands use thin iron plates or plastic+aluminum alloy materials. All door frames of Petoasis are made of aluminum alloy.
Lock Design
Dog door has locks on both the inside and outside. You can easily control the opening or closing of the door.
Durable Door Flap
All Petoasis orders can enjoy one replacement service for damaged door flaps. This can reduce the cost of maintaining your dog door.
How to choose the appropriate size for your dog
Keep the dog standing
Measure the maximum width of the dog (chest or abdomen – based on the dog’s body size)
Measure the maximum height of the dog (from ankle to the highest point on the back)
Compare the size of the door opening to ensure that the dog can pass through
Tip: If your dog’s body size is close to the size of a dog hole. we recommend purchasing a larger size to make it more comfortable for your dog to pass through.
About Size – Important!
If you have an old dog door that needs to be replaced. you need to ensure that the cut size of the new dog door is greater than the current size.
M-Medium Dog Door:
Cut size on the door of the house: 13.78 H x 10.24 W Size that dogs can pass through (Flap): 12.0 H x 8.07 W
Suitable for: Papillon. Chihuahua. Pomeranian. Toy Poodle. Bichon Frise. etc
L-Large Dog Door:
Cut size on the door of the house: 17.71 H x 12.0 W Size that dogs can pass through (Flap): 16.2 H x 10.2 W
Suitable for (Some dogs may need XL Door as adults)：Bulldog. Border Collie. Cocker Spaniel. Golden Retriever. Sheltie. Alaskan Malamute. Standard Schnauzer. Australian Shepherd. Labrador Retriever. Springer Spaniel. etc
XL-Large Dog Door:
Cut size on the door of the house: 25.19 H x 15.94 W Size that dogs can pass through (Flap): 23.5 H x 13.7 W
Suitable for: Doberman Pinscher. Bernese Mountain. German Shepherd. Great Dane. Irish Wolfhound. Scottish Deerhound. etc
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