You love giving your pet the freedom to roam in and out, but you also want to keep your home secure and energy efficient. If you live in an apartment or rental, cutting a hole in a wall or door is not an option. That is where a PetSafe sliding glass door insert comes in. This guide reviews the top PetSafe models available in 2026, helping you choose the right one for your dog or cat. Whether you have a small pup or a giant breed, we have you covered. For more on large breed options, check out our best dog door for large breeds guide.
Buying Guide
Pet Size and Flap Dimensions
The most important factor is matching the flap size to your pet. PetSafe offers models for pets up to 40 lb, up to 100 lb, and even up to 220 lb. Measure your pet’s height and width at the shoulders to ensure a comfortable fit. A flap that is too small will discourage use, while one that is too large may let in drafts. For extra large breeds, the PetSafe Sliding Glass Pet Door, 1 Piece with a 13.7 by 23.8 inch opening is ideal.
Installation and Rental Friendliness
All PetSafe sliding glass door inserts install without cutting into walls or doors. They fit into your existing sliding door track and come with adjustable panels. Most models are one-piece designs that you can remove and take with you when you move. This makes them perfect for renters. The PetSafe Extreme Weather Sliding Glass Door Review covers models with adhesive installation options for even easier setup.
Energy Efficiency and Weather Resistance
Energy efficiency is a key concern for many pet owners. PetSafe doors feature weather stripping, magnetic closures, and tinted flaps to minimize heat loss. The Extreme Weather models go a step further with dual-paned glass and three insulating flaps. If you live in a climate with extreme temperatures, these are worth the investment. For more on energy-saving pet doors, see our Best Electric Dog Door article.
Security Features
Security is a top priority when installing a pet door in a sliding glass door. PetSafe includes a latch kit that locks your sliding door once the pet door is in place. Some models also come with a slide-in closing panel to block access when needed. This gives you peace of mind when you are away from home. For advanced security options, explore the PetSafe electronic SmartDoor review.
Final Thoughts
Choosing the right PetSafe sliding glass door insert comes down to your pet’s size and your home’s needs. For most medium dogs, the PetSafe Sliding Glass Pet Door, 1 Piece offers a perfect balance of ease, durability, and energy efficiency. If you have a large breed or face harsh weather, the PetSafe Extreme Weather Sliding Glass Pet Door provides superior insulation and a secure fit. Both models are rental-friendly and backed by PetSafe’s trusted quality, so you can give your pet freedom without compromising your home.
Frequently Asked Questions
Can I install a PetSafe sliding glass door insert myself? Yes, these doors are designed for DIY installation. They fit into your existing sliding door track and require no cutting. Most models come with clear instructions and all necessary hardware.
Will a pet door affect my home’s energy efficiency? PetSafe doors are built with weather stripping, magnetic seals, and tinted flaps to minimize energy loss. Extreme Weather models feature dual-paned glass and three flaps for maximum insulation. In 2026, these designs help keep your home comfortable year-round.
What size pet door do I need for my dog? Measure your pet’s height at the shoulder and width at the chest. PetSafe offers flaps for pets up to 40 lb, up to 100 lb, and up to 220 lb. Choose a flap that is at least 2 inches taller and wider than your pet for easy passage. For more guidance, visit our Smart Pet Home page.
Can I take the pet door with me if I move? Absolutely. PetSafe one-piece models are designed for renters. You can remove the entire unit from the door track and reinstall it at your new home without leaving any damage behind.
