Namsan Cat Door for Screen Door
- Cat Door
A magnetic, auto closing pet door built into a full screen door replacement panel, sized for cats and small dogs, with a lock for sealing it shut.
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How it ranks among the 51 cat doors we track
4.4★ across 705 Amazon ratings, Bayesian-smoothed toward the category average.
705 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 51 cat doors we track - how the scorecard works · full cat doors data report. Confidence: limited - incomplete product information.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This is a magnetic pet door built into a screen door panel, sized 8.3 x 10.3 inches, made for cats and small dogs to pass through a sliding screen door. It auto closes with a magnetic flap and includes a lock to seal it shut when needed. Made by Namsan in black.
Rather than cutting a hole into an existing screen, this is a full replacement screen door panel with the pet door already built in, which avoids modifying a screen an owner may want to keep intact. The magnetic flap is meant to swing closed after the pet passes through, and the lock lets an owner seal the opening completely, useful overnight or when a pet needs to stay in or out. Sizing at 8.3 x 10.3 inches, it is built for cats and small dogs rather than larger breeds.
- 8.3 x 10.3 inch pet passage
- Magnetic auto closing flap
- Lockable closure
- Built into a full sliding screen door panel
Who it's for
Suits households with sliding screen doors who want a built in pet passage for a cat or small dog, without cutting into their current screen. Not sized for medium or large dogs given the 8.3 x 10.3 inch opening.
Strengths and trade-offs
Drawn from this product's published specifications.
- Magnetic flap auto closes after use
- Lockable for full closure when needed
- Replaces the whole screen panel instead of cutting into an existing one
- 8.3 x 10.3 inch opening limits it to cats and small dogs
- Requires fitting to a sliding screen door track
Performance notes
The magnetic flap is designed to swing shut on its own after the pet passes through, which helps keep drafts and insects out between uses. The lock feature adds a second layer, letting the opening be closed off entirely rather than relying on the magnets alone.
Specifications
| Brand | Namsan |
|---|
Other Namsan cat doors
How it compares
This product against the closest alternatives we track in cat doors.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Namsan Cat Door for Screen DoorThis product | 4.4 / 5 | 705 | 2.7 / 5 |
| Purrfect Portal Meow Manor® Cat Door Interior DoorPurrfect | 4.9 / 5 | 7,451 | 4.7 / 5 |
| PetSafe Interior Cat DoorPetSafe | 4.4 / 5 | 16,272 | 4.4 / 5 |
| Ideal Pet Products Cat Flap Door with 4 Way LockIDEAL | 4.6 / 5 | 2,900 | 4.2 / 5 |
| Dog Door for Screen Doordog | 4.5 / 5 | 3,600 | 4.1 / 5 |
Similar cat doors from other brands
Questions about the Namsan cat doors
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What size opening does the Namsan cat door have?
The passage measures 8.3 x 10.3 inches.
Does the Namsan pet door close on its own?
Yes, it uses a magnetic flap that closes automatically after the pet passes through.
Can the Namsan cat door be locked shut?
Yes, it includes a lockable closure.