1. Product Overview
The Eillion Large Dog Door is designed for seamless integration with sliding glass doors, offering a convenient and secure passage for your pets. This all-metal framed pet door features an openable design, adjustable height, and enhanced security features, ensuring both pet freedom and home safety.
Key Features:
- Openable Design: The dog door opens inward to maximize space, facilitating easy movement of items.
- Adjustable Height: Fits most villa and patio sliding glass doors with adjustable heights from 75 7/8" to 81".
- Perfect for Large Pets: Semi-transparent flap (10" wide x 16" high) suitable for pets up to 100 pounds.
- Enhanced Security: Includes a safety lock and a convenient slide-in closure panel.
- Energy Efficient & Weatherproof: Robust aluminum frame, magnetic-seal flap, and windproof strips for insulation.
2. Before Installation: Important Considerations
Before proceeding with installation, please review the following critical information to ensure proper fit and functionality.
2.1 Fixed-Swing Mechanism
This glass dog door has a fixed-swing mechanism. If installed on the left side of your glass door, it will only open inward. If installed on the right side, it will only open outward. This mechanism is non-adjustable due to its design structure.

Image: Illustration of the fixed-swing mechanism based on installation side.
2.2 Measuring Your Door Height
To ensure the correct height, measure from the top track to the inner bottom track of your aluminum sliding door frame. The door frame adjusts from 75 7/8" to 81" in height, with a glass door width of 14.8".

Image: Guide for measuring your sliding door height.
2.3 Track Compatibility
Verify your sliding door track is suitable for installation. The track width must exceed 0.7 inches.

Image: Track compatibility guide.
2.4 Drilling Requirement
Installation requires using a drill to bore permanent holes in the door frame for secure attachment.

Image: Note regarding drilling permanent holes in the door frame.
3. Installation Guide
Follow these steps for a successful installation of your Eillion dog door.
3.1 Step-by-Step Installation
- Install Frame: Position the dog door frame within your sliding glass door opening.
- Adjust Bars: Adjust the top bars to achieve a snug fit against the door frame.
- Secure with Screws: Use a drill to secure the frame by boring holes and inserting screws as indicated in the manual.
- Fasten Top Frame: Ensure the top frame is securely fastened to the door frame.
- Apply Weather Stripping: Install the provided weather stripping along the seams to prevent drafts and air leakage.

Image: Visual guide for the installation process.
3.2 Installation Videos
For a detailed visual guide, please refer to the official installation videos provided by Eillion:
How to Install the Eillion pet door for sliding glass door
Video: Step-by-step guide on installing the Eillion pet door.
Full Installation video
Video: Comprehensive full installation video for the pet door.
Sliding Glass Door Dog Door for Large Dogs | Easy Install
Video: Easy installation guide for the sliding glass dog door.
4. Operating Instructions
The Eillion dog door is designed for ease of use for both pets and owners.
4.1 Pet Access
The semi-transparent flap allows your pet to see through and easily push to enter or exit. The magnetic seal ensures the flap closes securely after use.
4.2 Locking Mechanism
For enhanced home security and to control your pet's access, utilize the integrated safety lock. A metal slide-in closure panel is also provided to completely block the pet opening when needed.

Image: Details of the metal lock and security features.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Eillion dog door.
5.1 Cleaning
Clean the aluminum frame and glass panels with a mild detergent and soft cloth. Avoid abrasive cleaners that could damage the finish.
5.2 Seal Inspection
Periodically inspect the magnetic-seal flap and windproof strips for wear and tear. Ensure they are free from debris to maintain energy efficiency and prevent drafts.

Image: Illustration of the 3-step draft defense system.
6. Specifications
| Attribute | Value |
|---|---|
| Size | Large - 1 Flap |
| Brand | Eillion |
| Color | 81" Sliding Door |
| Material | Aluminum, Glass |
| Maximum Pet Weight | 100 Pounds |
| Flap Dimensions | 10" W x 16" H |
| Adjustable Frame Height | 75 7/8" to 81" |
| Model Number | Large Sliding Glass Door |
6.1 Sizing Guide
Refer to the following charts to ensure the correct size for your pet and door.

Image: Pet Size Chart and Flap Opening Dimensions.

Image: Eillion Glass Pet Door Size Guide.
7. Troubleshooting
If you encounter any issues during installation or operation, please refer to the installation videos or contact customer support.
Q&A and what we learned from this install
Video: Answers to common questions and lessons learned during installation.
EVERYTHING to know BEFORE you buy this pet door
Video: Important information to consider before purchasing the pet door.
8. Warranty & Support
Eillion is committed to providing premium service and ensuring happy pets. Our dedicated customer service team is available to answer any questions or concerns you may have regarding your dog door.
Please do not hesitate to reach out if you require assistance with installation, operation, or any other product-related inquiries.
One Month Later Review
Video: A review of the dog door's performance after one month of use.