YGNNJY Sliding Dog Door-2, Adjustable Sliding Glass Door Insert with Screen
Product description
An adjustable-height design lets this YGNNJY pet door fit sliding glass door tracks from 75 4/5" to 80 3/10". Its mesh screen supports airflow while helping keep insects out. A magnetic flap gives dogs a way to pass through without you opening the sliding door for them. The Large size is rated for dogs up to 75 pounds.
What stands out

Instead of cutting an opening into a door, this pet door is designed as an adjustable insert for a sliding glass door. That makes it a practical approach for households that want a pet passage within the existing sliding-door setup. Measure the track height before choosing it, then compare it with the 75 4/5" to 80 3/10" adjustment range.
The screen design is intended to encourage fresh-air circulation in warmer months while helping keep insects outside. The flap closes magnetically, and the product also has a locking mechanism. Together, these features support everyday use while preserving a way to secure the passage when needed. The frame is aluminum and the listed color is Classic White.



Customer feedback highlights ease of installation and satisfaction with the product’s quality. Those comments may be useful if you are comparing a sliding-door insert with a more involved built-in pet door and want an option designed for placement in a door track.
Key takeaways

This Large pet door is listed for dogs up to 75 pounds, with a wide opening described as suitable for larger pets. Its adjustable height is the key fit detail: check both your sliding-door track and your dog’s size before purchase. For a typical day at home, the passage can give your dog access in and out while you keep the sliding glass door closed, and the mesh screen helps maintain airflow when the setup is in use.
The product is specifically presented for sliding glass doors, so its main advantage is combining a pet passage with that door style. If you are choosing between a track insert and a pet door built directly into a permanent door, this design keeps the installation approach centered on the sliding-door track. The aluminum frame and magnetic closure add practical details for regular household use.



How to use it
Before setting up the insert, measure the sliding-door track height and your dog’s size. Confirm the track falls within the adjustable range and that the Large opening is appropriate for your pet. Position the unit in the sliding-door track according to its fit, then use the magnetic flap for routine passage. The mesh screen is designed for airflow during warmer months, while the locking mechanism provides a way to secure the pet door when needed.

Practical questions
What sliding-door height does it fit? The insert adjusts from 75 4/5" to 80 3/10". Measure the track height and compare it with this range before selecting the product.



What size dog is it designed for? The Large version is listed for dogs up to 75 pounds. The product also advises measuring your dog to make sure the opening is comfortable for them.
How does the flap close? It uses a magnetic closure. The unit also has a locking mechanism for securing the passage when needed.
Is it worth it?
For dog owners who want a pet passage in a sliding glass door setup, this insert brings together adjustable track height, a mesh screen, and a magnetic flap in one design. Its Large size and stated 75-pound weight limit make it a relevant choice for households with bigger dogs, while the screen and locking mechanism support practical everyday use. Measure the track and your dog first, then choose it for a sliding-door arrangement that lets your pet move through without requiring you to open the door each time.
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