# Petoasis 3-Flap Medium Dog Door, Aluminum Frame

Petoasis Aluminum dog door is a medium, three-flap pet door with an aluminum frame. Its insulated flap design is intended to reduce drafts, while the listing and customer feedback both point to fit as something worth checking against your opening before installation.

- [Original product page](https://best-deals.pro/product/petoasis-three-flap-medium-aluminum-dog-door)
- [View offer](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- Market: US
- Language: en-US
- Currency: USD
- Brand: Petoasis
- Model: Aluminum dog door
- Category: Pet Supplies > Pet Toys & Accessories
- Price: 86.39 USD
- Previous price: 95.99 USD
- Discount: 10%
- Price checked: 2026-11-13T05:41:59.355Z
- Rating: 4.6 / 5
- Reviews: 1291

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The three-flap construction includes a middle insulation layer, according to the listing.
- A reinforced aluminum-alloy frame is promoted for durability and rust resistance.
- The manufacturer describes the door as suitable for installation in doors or walls, but does not provide opening dimensions here.

## Pros

- Three flaps and a claimed insulating middle layer are intended to reduce weather and cold-air transfer.
- Customer feedback reports easy installation and solid construction, including use with large dogs.

## Specifications

### Identity
- Brand: Petoasis
- Model: Aluminum dog door
- Size: Medium
- Pet type: Dog
- Color: Black
### Materials and protection
- Material listed: Aluminum
- Flap design: 3 flaps
- Maximum compatible thickness: 2.4 inches

## Before you buy

- The listing calls the size Medium but gives no opening dimensions or supported dog-weight range. Customer feedback includes both good-fit reports and mentions of a 1/4 inch gap on either side, so compare the product's actual measurements with your opening before buying.

## A good fit for

- Owners seeking a medium dog door with a three-flap design and aluminum frame.
- Buyers prioritizing a claimed insulated flap arrangement and willing to verify the opening fit.

## Less suited to

- Buyers who need confirmed cutout dimensions or a specified maximum dog weight before purchase.

## Customer feedback

Customer feedback highlights easy installation, solid construction, and positive impressions of sealing and keeping out cold air. Those reports are relevant to a three-flap door with a claimed insulating middle layer, but fit experiences are mixed: some customers say it fits well while others mention gaps of about 1/4 inch on either side. The overall rating distribution is mostly five-star, with a smaller spread across lower ratings, so it signals generally favorable impressions without establishing performance for every opening.
- Positive themes: Customers report easy installation and solid construction, including durability with large dogs.
- Positive themes: Customer feedback praises the three-flap sealing and its effect on cold air and weather.
- Mixed feedback: Fit feedback is mixed. Some customers report a good fit, while others mention a 1/4 inch gap on either side.

## Frequently asked questions

### What size is this Petoasis dog door?
The listing identifies it as Medium, but does not provide opening dimensions or a supported dog-weight range. Check the product measurements against your installation space.
### What is the frame made of?
The listing specifies aluminum and describes a reinforced aluminum-alloy frame.
### How are the flaps intended to handle weather?
The listing describes three flaps with a middle insulation layer intended to limit weather effects. Customer feedback also reports favorable sealing and reduced cold air, though results depend on fit and installation.
### Does it fit every door or wall thickness?
The listing gives a maximum compatible thickness of 2.4 inches. Confirm your installation surface and opening dimensions before purchasing.

## Alternative options

- [Baboni Pet Door for Wall,3-Flap,Steel Frame and Telescoping Tunnel, Aluminum Lock, Double Flap Dog Door and Cat Door, Strong and Durable \(Pets Up to 100 Lb\) -Large](https://best-deals.pro/visit/baboni-pd-pd-3-large-three-flap-wall-pet-door)
- [Baboni Dog Door for Door,3-Flap,Metal Frame,X-Large \| Pets Up to 220 Lb,for Interior and Exterior Doors,Aluminum Lock,Metal Panel,Strong Magnetic Flaps](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- [VEVOR Dog Door for Sliding Glass Door X-Large Doggy Door for Sliding Doors \| For Dogs, 75 7/8"-80 11/16" Adjustable Height, Aluminum Frame, Tempered Glass, Pet Doors with Hinge Structure, Flap and Lock](https://best-deals.pro/visit/vevor-cwm03-xl-x-large-sliding-glass-dog-door)
- [WAOWAO 40.55" Extra Tall Baby Dog Pet Gate 29.92-63.38" Wide Indoor White \| Extra-Tall,Extra-Wide,Pressure/Hardware Mount,More Durable Safety,One-Hand Walk Through,for Indoor,Doorways,Kitchen,Stairs](https://best-deals.pro/visit/waowao-extra-tall-indoor-baby-pet-gate)
- [Cumbor 36 in Extra Tall Baby Gate for Doorways, 30-40.6 in Dog Gate White \| Mom's Choice Awards Winner, Double Lock, 2-Way Swing, Auto Close Child Gate for Toddler & Pets, Pressure or Hardware Mounted](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- [MAVRICFLEX Large Dog Door for Exterior Doors, French Dog Door Style, Heavy-Duty Aluminum Frame Large Doggy Door with Magnetic Flaps and Two Sliding Panels, Suitable for Dogs Up to 110lbs, Black](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- [Baboni Pet Door for Wall,3-Flap,Steel Frame and Telescoping Tunnel, Aluminum Lock, Double Flap Dog Door and Cat Door, Strong and Durable \(Pets Up to 40 Lb\) -Medium](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- [Baboni Dog Door for Door,3-Flap,Durable Plastic Frame,Large \| Pets Up to 100 Lb,for Interior and Exterior Doors,Aluminum Lock,Metal Panel,Strong Magnetic Flaps, Never Rust](https://best-deals.pro/visit/baboni-pd-2-6-large-three-flap-dog-door)
- [PetSafe Extreme Weather Aluminum Dog Door, 3-Flap Insulated, X-Large \| Energy-Efficient, Blocks 3x More Thermal Loss, Reinforced Aluminum Frame, Magnetic Seal on Flap](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- [ClawJaw Steel Large Dog Door for Exterior Wall \| Double-Sided Wind Deflector and Magnetic Flaps, Easy to Install, Black \(Pets Up to 110 Lb\)-Large](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- [Heavy Duty Large Dog Door forWall, Energy Efficient Doggie Door \| Aluminum Frame, T...](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)
- [\[MAVRICPOWER\] Rust Proof Alminum Large Dog Door for Exterior Door \| Doggie Door with 2 Sliding Lock Panels for Extreme Weather, Pet Door for Dogs Up to 80 lbs](https://best-deals.pro/visit/petoasis-three-flap-medium-aluminum-dog-door)

## Images

![Petoasis 3-Flap Medium Dog Door, Aluminum Frame — 1](https://best-deals.pro/i/QahklBF0Gv5xR74VG3_az30D3PbBb06kratNahHibSoiJ4KFBOpumZk3h_BiGF1Oi1HlxOS3JGs3IgMjxlGKXCwsftFV1FGIP3RIwmjk-hyw8Mdd6iXWHNr_.jpg)

![Petoasis 3-Flap Medium Dog Door, Aluminum Frame — 2](https://best-deals.pro/i/RZFsMdoCy6NfQLsDzTIlV9X9GoelNntZaOzVjN0FtnL2IiFyEIWLzjMqszeoN9HH4ikA36RXecdhMi2sLNqprgfdnxtoPA4Rar4G6wxVq9i5IY2aWfG23H_1.jpg)

![Petoasis 3-Flap Medium Dog Door, Aluminum Frame — 3](https://best-deals.pro/i/bbrUyWqS1i56lswf9VdBkRI4FqrFGTCwlgebFpb5083NwdwvpfR7X6NHdFJm-NunB-sMqP1uBJ0mRGZU1uT9ly9iMaoRyoj02jNgxg8FT2h-_UjzxfideNBg.jpg)

![Petoasis 3-Flap Medium Dog Door, Aluminum Frame — 4](https://best-deals.pro/i/NQ_Up3KIsYVDraaSf-5Q1Ssl7MTvn4BPGEvp9XBKzKaA36jlBFZy79lVKWEIMGeqE7I5J75QEeY6ouvr5ociKsZtqUYOQFTp0za0GKzZ9nUVE23khngbHn8A.jpg)

![Petoasis 3-Flap Medium Dog Door, Aluminum Frame — 5](https://best-deals.pro/i/k2ZQ965_c2278_Ti0Ts9xVIV62r7VSc6LIAQxogO-fteonn0PZFSSW9ZuyG-zL0MwB0-x8E1ckbBSpX6h1Fj-HTC5JuLjsOROginKZBMuCVCHkHEcRuy0F0h.jpg)

![Petoasis 3-Flap Medium Dog Door, Aluminum Frame — 6](https://best-deals.pro/i/-5bHTC4lXIFF-gv07Lx3o_ierlzjHjTpPcf55YGXsE8DGBucpWyPEQM4WFMxzwhE-tV_BwnOnW9XE4NbQcePdCXUU9zi6TLOWzNyYmoiAhh2Z_Fl1yzNRSS9.jpg)