10 Best Cat Doors 2025 in the United States

The PetSafe Doggy Door for Sliding Glass Doors is an excellent choice for cat and small dog owners, especially those living in apartments or rental homes. It fits pets up to 15 pounds, with a flap sized to comfortably allow small pets through without stress or injury. Its no-cut, DIY installation is a big plus if you want to avoid tools or permanent modifications, making it ideal for renters. The adjustable height feature helps it fit a variety of sliding door sizes, adding to its flexibility. Made with a sturdy aluminum frame, it includes weather stripping and a slide-in closing panel, which provide solid weather protection to help keep drafts and rain out. The flap is flexible and tinted with magnets to help it close quietly, reducing noise when your pet uses it.

Security is well covered with a latch kit that locks the sliding door, ensuring your home stays safe even when the pet door is installed, and you can also control your pet’s access by closing the panel when needed. On the downside, the door is designed only for small pets, so larger dogs won’t fit. Some users might find the flap a bit stiff initially, requiring pets to get used to it. Also, while weatherproofing is good, extreme weather conditions might still affect the door’s performance. If you want a secure, easy-to-install pet door that won’t damage your sliding door and fits small cats or dogs, this product offers a practical and user-friendly solution.

The PetSafe Never Rust Plastic Doggie Door is designed for pet owners looking to give their medium-sized dogs the freedom to come and go as they please. This door is particularly suitable for pet owners with dogs up to 40 pounds and is also versatile enough to be installed in both interior and exterior doors or walls. One of its standout features is the customizable paintable frame, allowing it to blend seamlessly with your home's décor. The DIY installation is another plus, as it means you won’t need to hire a professional, saving both time and money.

In terms of security, the snap-on closing panel helps keep unwanted animals out, offering peace of mind for homeowners. The door operates quietly, which is perfect for those who may be sensitive to noise. Customer support is readily available, which can be reassuring for first-time buyers or anyone needing assistance.

There are some drawbacks to consider. The plastic material, while lightweight and easy to install, may not be as durable as heavier materials like metal, especially in harsher weather conditions. Although the door has weatherproofing features, extreme elements could still affect its longevity. Additionally, the flap size might not accommodate larger breeds or particularly stout pets, limiting its appeal if you own multiple sizes of dogs. This product is ideal for medium dog owners looking for a cost-effective and stylish solution to pet access.

The Endura Flap Thermo Panel Pet Door is a solid choice for pet owners looking to add a convenient entry point to their sliding glass doors. Its heavy-duty aluminum frame and tempered safety glass provide strong durability and good insulation, helping to keep outdoor temperatures from leaking inside. This makes it energy efficient, which is a big plus if you want to avoid higher heating or cooling bills. The magnetic dual-layer flap creates a tight seal that further protects against drafts and noise, although some minor flap noise can still occur when your pet uses it.

Installation is straightforward and non-permanent, using the sliding door track without needing to cut into the door, which is ideal for renters or those who move frequently. The door fits slider heights between 77.25" and 80.25", so measuring your door carefully is important to ensure compatibility. Security-wise, it includes a sturdy locking cover and a C-clamp lock, giving you control over when your pet can come and go. However, for extra security, additional locks on the sliding door might be needed.

This pet door suits medium-sized pets up to about 21" tall and 40 pounds, but it might not be appropriate for larger dogs. The white finish blends well with most sliding doors, but if your door frame is a different color, it could stand out visually. This pet door is a durable, energy-efficient, and renter-friendly option that balances ease of use with security, though it requires careful sizing and may need extra locks for full safety.