Amazon Basics CD-M Medium Adjustable Plastic Pet Door

Medium: The Amazon Basics CD-M adjustable plastic pet door is listed for cats and small dogs, with a 19.05 x 29.21 cm entrance and a plastic frame. Customer feedback reports easy installation and useful everyday function, but also concerns about the locking bar and plastic flap support.

At a glance

The listing describes an adjustable pet door for controlling access between indoor and outdoor spaces.
The stated entrance measures 19.05 x 29.21 cm, which is the relevant clearance to compare with your pet.
The listing says installation components and instructions are included.

Price

$29.46Save 15%

Reference price: ~~$34.66~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

A stated entrance size helps buyers assess whether the opening may suit their pet before cutting or fitting.
Customer feedback highlights straightforward installation, including for less experienced DIYers.

Cons

Customer feedback reports that the locking bar can slide too easily and that the plastic supporting the vinyl flap has broken in some cases.

Technical specifications

9 specifications

Identity
Brand	Amazon Basics
Model	CD-M
Size	Medium
Colour	White and Grey

Dimensions and installation
Overall product dimensions	26.67 x 38.10 x 9.91 cm
Entrance dimensions	19.05 x 29.21 cm
Weight listed	1.33 kg

Materials and intended pets
Material listed	Plastic
Dog breed size listed	Small

What to know before buying

The listing calls the size Medium but also labels the intended dog breed size Small. Check the 19.05 x 29.21 cm entrance against your pet and the required installation location. Customer feedback also reports mixed fit and appearance experiences, so measure the intended opening before purchase.

Who is it for?

A good fit for

Cat owners and owners of small dogs looking for a plastic pet door with a stated entrance size.
Buyers comfortable checking the cut-out and fitting requirements before installation.

Less suited to

Owners who need a clearly substantiated secure locking mechanism or stronger evidence of long-term flap-support durability.
Pets whose size does not suit the stated 19.05 x 29.21 cm entrance.

Amazon Basics CD-M Medium Adjustable Plastic Pet Door · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 551 ratings

5 stars70%70%
4 stars14%14%
3 stars6%6%
2 stars5%5%
1 star5%5%

Customer feedback is generally favourable about installation and everyday function, with many five-star ratings in the supplied distribution. However, customers also report a locking bar that can slide too easily and cases of the plastic flap support breaking, with some failures reported within three months. Fit and appearance opinions are mixed. For buyers considering this plastic door, those durability and locking concerns matter alongside the stated entrance dimensions and should be weighed against the intended use.

Positive themes

Customers describe installation as easy, including for amateur DIYers.
Feedback describes the door as functional over time.

Negative themes

Feedback reports that the locking bar can slide too easily.
Some customers report the plastic supporting the vinyl door breaking, including within three months.

Mixed feedback

Customers express mixed opinions about fit and appearance.

Frequently asked questions

What is the entrance size?

The listing gives the entrance dimensions as 19.05 x 29.21 cm. Compare those measurements with your pet before choosing a size.

What are the overall dimensions?

The product dimensions are listed as 26.67 x 38.10 x 9.91 cm.

Does the listing include installation components and instructions?

Yes. The listing claims that all components and instructions are included.

What concerns appear in customer feedback?

Feedback reports that the locking bar may slide too easily and that plastic supporting the vinyl flap has broken in some cases. Fit and appearance opinions are mixed.