10 Best Doggy Door For Sliding Glass Doors 2026 in the United States

The PetSafe Doggy Door for Sliding Glass Doors is a solid choice for pet owners, particularly those in apartments or rental homes. One of its standout features is the no-cut DIY installation, which makes it user-friendly for individuals who may not be handy with tools. The adjustable height allows it to fit a range of sliding door tracks, accommodating different living situations. This is especially beneficial for those with larger dogs, given its size that supports pets up to 220 pounds. The flap dimensions ensure that extra-large dogs can use the door without trouble.

Security is another strength, as the included latch kit helps keep your home safe, which is essential for anyone concerned about unauthorized access. The controlled access feature through the closing panel is a nice touch, providing pet owners the option to limit their pets' outdoor time when needed.

There are a few considerations to keep in mind. While the aluminum material is durable, it might not insulate as effectively as some other materials, potentially impacting energy efficiency. The door doesn’t come with sophisticated weatherproofing, which might be a concern in extreme weather conditions. Also, while the customer service is U.S.-based, there might be an initial learning curve for some users during installation, despite its straightforward design.

This 3 Flap XLarge Dog Door is made for big pets, accommodating dogs up to 220 pounds with a spacious 13.4” by 23.7” semi-transparent flap. It fits sliding glass doors that range from about 75 7/8" to 81" in height, which covers many patio doors. The door is built from glass and metal, offering solid durability. Installation requires drilling into the door frame, so it's a bit more permanent and may need some DIY effort or professional help.

One standout feature is its triple-flap design with double magnetic closures, which helps reduce drafts, rain, and wind from getting inside—great for keeping your home energy efficient. Security is considered through a safety lock that lets you control when your pet can go outside, which is important for peace of mind. However, the flap’s swing direction is fixed depending on which side you install it (inward if on the left, outward if on the right), and this can't be changed, so you need to plan carefully before installation.

The door also opens inward to save space, which helps if you have limited room around your sliding door. This doggy door represents a strong choice for owners of giant dog breeds who want a durable, well-insulated, and secure pet door integrated into their sliding glass door, but be ready for a somewhat involved installation and to accept the fixed flap swing direction.

The PetSafe Extreme Weather Sliding Glass Pet Door is designed for pet owners living in rental homes or apartments, offering a large size suitable for big dogs up to 100 pounds. The door is made from durable aluminum and glass, ensuring longevity and sturdiness. A key strength of this pet door is its energy efficiency; it features dual-paned glass and weather stripping to minimize energy loss and keep your home comfortable. Additionally, the door includes three flexible flaps with a magnetic seal for superior insulation against extreme weather conditions.

This makes it a great option for those looking to balance their pet’s freedom with energy savings. Installation is straightforward and rental-friendly, as it uses adhesive strips for easy setup and removal, making it ideal for temporary housing situations. The adjustable height ensures a snug fit within your existing sliding glass door track, eliminating drafts and enhancing security. For added peace of mind, the pet door comes with a security bar to prevent unwanted intrusions, and a snap-on closing panel to manage your pet's access.

However, it's worth noting that the door is relatively heavy at 27.5 pounds, which might make installation a bit challenging for some users. Additionally, some users may find the price point higher compared to simpler pet door options. Despite these minor drawbacks, the PetSafe Extreme Weather Sliding Glass Pet Door stands out for its energy efficiency, ease of installation, and solid security features, making it a reliable choice for pet owners prioritizing these aspects.