Cat Door for Interior Exterior Door
- Cat Door
- Sliding Lock
- Cat
- 1
- Better rated than 55%
A lockable, weatherproof flap door sized for cats and small dogs, worth it if your door thickness matches the 2.1 inch spec exactly.
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How it ranks among the 51 cat doors we track
4.5★ across 77 Amazon ratings, Bayesian-smoothed toward the category average.
77 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
400+ bought on Amazon 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: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 4-way locking flap door sized for cats and small dogs under 23 inches in girth, with a 9.8 by 9.3 inch outer flap opening, weatherproof ABS construction and a sliding lock.
Built for doors 2.1 inches thick, it is meant to be installed into an existing interior or exterior door rather than a wall, and the 4-way lock lets owners set it to in only, out only, both ways or fully locked. The white ABS frame is described as weatherproof, which points to exterior door use as well as interior.
- 9.8 x 9.3 inch outer flap size
- 4-way sliding lock
- Weatherproof ABS construction
- Fits 2.1 inch thick doors
Who it's for
Fits owners installing a pet door into a standard 2.1 inch thick door for cats or small dogs under 23 inches around, who want lockable direction control. Not suited to doors thicker or thinner than 2.1 inches, or to larger dogs.
Strengths and trade-offs
Drawn from this product's published specifications.
- 4-way lock covers in, out, both or fully locked
- Weatherproof for exterior door use
- Sized for cats and small dogs under 23 inch girth
- Fits only 2.1 inch thick doors with no stated range
- Not sized for larger dog breeds
Performance notes
The 4-way lock covers the common scenarios of keeping a pet in, keeping it out, allowing both directions or locking it fully, which matters most for exterior installations where security or weather is a concern. Because the compatible thickness is listed as exactly 2.1 inches with no stated range, doors outside that measurement are likely to be a poor fit.
Specifications
| Brand | cat |
|---|---|
| Dimensions & fit | |
| Dog Breed Size | Small |
| Construction & materials | |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Frame Material | Plastic |
| Color | White |
| Compatibility & installation | |
| Maximum Compatible Thickness | 2.1 inches |
| Minimum Compatible Thickness | 2.1 inches |
| Smart Home Compatibility | Not Smart Home Compatible |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Closure Type | Sliding Lock |
| Pet Type | Cat |
| Customer Reviews | {'ratings_count': '77', 'stars': '4.5'} |
| Asin | B0GC4RQKLS |
| Manufacturer | Mkobon |
| Best Sellers Rank | #24,103 in Pet Supplies (See Top 100 in Pet Supplies) #43 in Cat Doors |
| Model Number | Cat Door for Interior Exterior Door |
Other cat cat doors
How it compares
This product against the closest alternatives we track in cat doors.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Cat Door for Interior Exterior DoorThis product | 4.5 / 5 | 77 | 4.0 / 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 cat cat doors
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What door thickness does this cat door fit?
It is listed as compatible with doors 2.1 inches thick.
Can this cat door lock in only one direction?
Yes, the 4-way lock allows in only, out only, both directions, or fully locked.
Is this cat door suitable for small dogs as well as cats?
Yes, it is rated for pets with a circumference under 23 inches, which covers cats and small dogs.