Top 10 Best glass door inserts in 2026

Main highlights

• •No-Cut DIY Install: The PetSafe Sliding Glass Pet Door installs easily into your sliding glass door track, perfect for apartments or rentals with no drilling or permanent alterations required
• •Weatherproof & Secure: Features a magnetic flap, shatter-resistant glass, human door lock kit, and pet door closing panel for convenient, energy-efficient, and safe pet access in any season
• •Flap Sizes for Every Breed: Designed with small dogs in mind, this sliding glass dog door boasts a flap opening of 5/14" W x 8 3/16" H, accommodating pets up to 15 lb
• •Global Mission, Local Care: With U.S. roots and worldwide reach, PetSafe delivers vet- and trainer-recommended solutions and exceptional customer support to create fields of joy for pets
• •25 Years of Trust: Since 1998, PetSafe has created safe, innovative, and trusted products that bring joy, enhance pet lives, and support the lifelong bond between pets and their families
• •Easily install a pet door in your existing sliding glass door- no cutting required
• •Great for apartments or condos- take the door with you when you move
• •Durable aluminum frame including weather stripping and slide-in closing panel for weather resistance
• •Three colors available to fit your décor – White/Satin/Bronze
• •Four pet door sizes to fit a wide variety of pet heights and weights
• •Includes flexible, tinted flap with magnetic closure and latch kit for locking
• •Call, chat or email with our expert US-based customer care specialists six days a week; They are waiting to assist you and your pet with your product needs
• •PetSafe brand has been an industry leading US manufacturer of pet behavior, containment and lifestyle products since 1991, helping millions of people and pets each year

Main highlights

• •Attention Before Purchase: Our glass dog door has a fixed - swing mechanism. If it's installed on the left side of the glass door, it can only open inward. If installed on the right side, it can only open outward. This is non - adjustable because of the design structure. Also, note that installation demands using a drill to bore holes in the door frame.
• •Openable Design: Our dog door for sliding glass doors opens inward to maximize limited space, making it easy for people to move items in and out of the backyard. Additionally, we've filed for a patent.
• •Adjustable Height: The large doggie door for the sliding door frame adjusts from 75 - 7/8" to 81" in height, with a glass door width of 14.8". This fits most villa and patio sliding glass doors. To ensure the correct height, measure from the top track to the inner bottom track of your aluminum sliding door frame.
• •Perfect for Large Pets: Our sliding glass door pet door features a semi - transparent flap that measures 10” wide by 16” high. This size provides a clear view and easy passage for pets weighing up to 100 pounds. Additionally, it comes with a safety lock, enhancing home security while allowing you to control your pet's access.
• •Energy Efficient & Weatherproof: Our large doggie door for sliding doors is crafted with a robust aluminum frame, a magnetic - seal flap, windproof strips, and a convenient slide - in closure panel. This combination is expertly designed to stand up to harsh weather conditions, ensuring your home remains cozy, secure, and energy.
• •Premium Service, Happy Pets:Unleash your pet's adventurous spirit with eillion's dog doors for sliding glass doors. Grant your furry friends the freedom to safely explore the outdoors. Our committed customer service team is always on standby to answer any questions you may have. Don't hesitate to reach out if you have any concerns.

Main highlights

• •Designed for Medium Pets: The dog door flap measures 8 1/4" x 12 1/4" (209.6 x 311.2 mm), providing a spacious and comfortable passage. Perfect for small dogs and cats, this size ensures easy access.
• •Adjustable Height: The dog door for sliding glass door supports height adjustment between 75 7/8" - 80 11/16" (1927 - 2049 mm), allowing it to fit a variety of door frames. This simplifies the installation process, making it easy for both beginners and experienced users to set up.
• •Built to Last: The doggie door for sliding door features an upgraded metal cover for enhanced durability. Its new hinge structure ensures the flap remains intact even in low temperatures, providing a long-lasting and reliable entryway for your pets. The high-quality aluminum frame and tempered glass window create a strong and aesthetically pleasing structure.
• •Secure Locking Design: When you need to limit your pet's movement, the secure lock design allows you to easily lock the sliding door dog door, preventing unauthorized access. This feature is especially useful during nighttime, when you're away, or in specific situations to ensure your pet's safety at home.
• •Easy Installation: Designed for convenient installation, the pet door for sliding glass door easily slides into your patio door track without the need for tools. It fits most sliding door track heights, making it a perfect solution for renters or anyone seeking a non-permanent option.

Main highlights

• •Material:The glass retainer clips are clear plastic construction and the screws are made of alloy
• •Easy to install: Our glass cabinet panel screen retainer clips with screws complete assembly for easy installation,drill several holes on walls, cabinets or doors at proper positions, fix glass and clips, then tighten the screws
• •Quantity: You will get 20 packs of glass retainer clips kit,including 20 pieces of glass clips and 20 pieces of screws
• •Size:The plastic mirror clips are about 25 mm/ 1 inch in length, available in 4mm offset. For more size details, please refer to the picture before your choosing
• •Wide application:Designed for recessed support of mirrors, glass... these plastic retainer clip kits can help you attach glass, mirrors or other screens on dresser, wardrobe, bookcase, pantry cabinets, doors, wooden panel and other places easily, bringing you much convenience

Main highlights

• •Size Details: the insulated door glass inserts kit measures about 24 x 38 inches of external frame, ideal for 1-3/4" thick steel or fiberglass doors, to replace an existing door glass panel
• •What You Get: the exterior door glass insert comes with glass panel, frame assembly, special screws, caps, which allows you to upgrade old door glass with low cost, extending the lifespan of the door while improving both aesthetics and functionality
• •Ventilation Screen, Sliding Design: built in removable screen, the double pane windows door glass insert slides vertically upwards and downwards, allowing for flexible airflow adjustment, no need of additional screen doors or storm doors to prevent particulate matter
• •Double Pane Tempered Glass for Insulation: the double pane tempered glass construction provides increased safety, reduces noise and temperature, effectively blocks heat transfer, reducing air conditioning and heating energy consumption, more durable and energy efficient than single pane glass
• •Easy to Install: it's quick and easy to replace the same size existing door glass inserts with home door windows replacement, please prepare power drill and pry bar; And two people are recommended for easier installation

Main highlights

• •GLASS DOOR REPLACEMENT FOR A 24" X 38" FRAME: This door glass kit will replace an existing door glass panel with outer frame dimensions of 24” x 38” (+/- 0.25”), and a door thickness of 1-3/4”. Perfect replacement for the following existing door glass panels: a) Half Light on a 6’8” door.
• •COMPATIBLE WITH STEEL OR FIBERGLASS DOORS: All our door glass kits are suitable for particular steel and fiberglass doors, depending on the panel configuration, and they must be 1-3/4" thick. Make a beautiful home improvement at a fraction of the cost of a new door. This is a great way to extend your door's lifetime value.
• •EASY TO INSTALL: Replacement of the same size existing door inserts typically take under an hour. You only need standard tools like safety glasses, drill with a Phillips head bit, and a putty knife. Two people are recommended to tackle this project.
• •GLASS IS SLIGHTLY TINTED WITH A LOW-E COATING: This thin metallic coating helps reduce heat loss and glass condensation in winter and avoids air conditioning overuse in summer.
• •TEMPERED SAFETY GLASS: Produced with a heat-treating process, this glass is up to four times as impact resistant as annealed glass. When broken, it shatters into many small fragments, preventing major injuries.

Main highlights

• •Standard Replacement Size: These 10" x 38" entry door glass inserts and frames feature an outer frame measuring 9 ¾" x 37 ¾" (+/-0.25") with 8" x 36" glass panel, designed to fit most entry doors with 1-3/4" thickness for easy replacement
• •Comprehensive Kit: Included in the package is an insulated tempered glass panel which is double glazing, 1 molded plastic frame, 1 pack of specially designed screws, and screw caps. The outer frame comes with factory-applied airtight and watertight seals, with the frame pre-bonded to the glass for added convenience
• •Quick and Easy Installation: Replacing existing door glass inserts of the same size typically takes less than an hour and requires only common tools; For results, it's recommended to have two people work on the project
• •Quick Style Upgrade: Transform your entryway's appearance in under an hour by replacing outdated or broken glass with these entry door glass inserts, requiring only basic tools
• •Warm Tips: For installations, a 9" x 37" door opening is recommended. The straightforward installation process, along with detailed instructions included in the package, allows you to complete the project with ease

Main highlights

Main highlights

• •GLASS DOOR REPLACEMENT FOR A 24" X 38" FRAME - This door glass kit will replace an existing door glass panel with outer frame dimensions of 24” x 38” (+/- 0.25”), and door thickness of 1-3/4”. Perfect replacement for the following existing door glass panels: a) Half Light on a 6’8” door. This kit includes 1 insulated glass panel, 1 door glass frame set, 1 pack of specially designed screws, and 1 pack of screw covers.
• •COMPATIBLE WITH STEEL OR FIBERGLASS DOORS - All our door glass kits are suitable for particular steel and fiberglass doors, depending on the panel configuration, and they must be 1-3/4" thick. Make a beautiful home improvement at a fraction of the cost of a new door. This is a great way to extend your door's lifetime value.
• •EASY TO INSTALL - Replacement of the same size existing door inserts typically take under an hour. You only need standard tools like safety glasses, drill with a Phillips head bit, and a putty knife. Two people are recommended to tackle this project.
• •GLASS IS SLIGHTLY TINTED WITH A LOW-E COATING - This thin metallic coating helps reduce heat loss and glass condensation in winter and avoids air conditioning overuse in summer.
• •TEMPERED SAFETY GLASS - Produced with a heat-treating process, this glass is up to four times as impact resistant as annealed glass. When broken, it shatters into many small fragments, preventing major injuries.