Cat Door- 4-Way Locking Option for Interior/Exterior Doors and Walls (M) | Weatherproof & Secure Cat Flap with Easy Installation Kit Review

Q: Can this cat door be installed in an exterior wall?

Yes, it's listed as compatible with interior doors, exterior doors, and walls, and is described as weatherproof for outdoor use.

Q: What does the 4-way lock control?

A 4-way lock lets you set the flap to swing both directions, allow entry only, allow exit only, or lock it fully closed.

Q: How thick a door does it fit?

It's rated for doors up to 2.17 inches thick, so measure your door before ordering to confirm it fits.

By Marcus Bell · Dog nutrition editor · Published 2026-05-26 · Updated 2026-07-04

4.5 (133) Amazon rating$9.99100+ bought last month

Our verdict

A budget-priced, 4-way locking flap door that installs on interior doors, exterior doors, or walls, making it one of the more versatile options here.

Check price on Amazon

Best for

Shoppers who want a low-cost, weatherproof flap door that can go on a door or a wall, for cats, small dogs, or other small pets.

Skip if

You'd rather have a no-flap or lockable-only design instead of a magnetic swinging flap.

Breed size Extra Small, Medium, Small
Weight 316.6 Grams

Priced 69% below the category median ($31.95 across 49 tracked models)

Our scorecard

4.4/5 overall

Owner rating4.5/5

4.5 average across 133 owner ratings
Popularity1.0/5

133 owner reviews, fewer than most models here

The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog and cat food, health, gear and grooming we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.

Overview

["This Hachacha-branded door is a traditional flap-style cat door, using a magnetic closure and a 4-way locking option so you can set it to open both ways, one way, or locked shut. It's marketed as weatherproof and rated for interior doors, exterior doors, and walls, giving it more installation flexibility than most doors in this roundup that are built for one location only.", "At $9.99 it's the cheapest cat door in this lineup by a wide margin, and it fits doors up to 2.17 inches thick. It's built from ABS and polypropylene with an ABS frame, and weighs about 316.6 grams. It's listed for cats, dogs, and small animals, and comes in white.", 'It carries a 4.5 star rating from 133 reviews, with around 100 units sold in the past month, a respectable showing for a budget-tier product.']

Pros

Lowest price in this roundup at $9.99
4-way magnetic locking flap for flexible access control
Works on interior doors, exterior doors, or walls
Listed as weatherproof for exterior use
4.5 star rating from Amazon reviewers

Cons

Uses a traditional flap, which some cats need time to learn
Lower review count than the more established brands in this category
No listed weight capacity, so confirm fit for larger cats separately

Specifications

Breed size: Extra Small, Medium, Small
Weight: 316.6 Grams

Performance notes

The 4-way magnetic lock is a meaningful feature at this price point, letting you switch between fully open, in-only, out-only, or fully locked. Rated for up to 2.17 inches of door thickness and built from ABS and polypropylene, it's a lighter-duty build than the metal-framed doors in this category but is positioned for exterior weatherproofing where many budget flaps are interior-only.

What buyers say

A 4.5 rating from 133 reviews is solid for a budget-tier product, with roughly 100 units bought in the past month showing steady demand.