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.

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.

Price

$86.39Save 10%

Reference price: ~~$95.99~~

Price checked: Nov 13, 2026

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Pros and cons

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.

Technical specifications

8 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

What to know before buying

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.

Who is it for?

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.

Petoasis 3-Flap Medium Dog Door, Aluminum Frame · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 1,291 ratings

5 stars80%80%
4 stars10%10%
3 stars5%5%
2 stars1%1%
1 star4%4%

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.
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.