PATIOLOCK™ | PRODUCT SELECTION GUIDE
Check Your Door. Choose Your PatioLock™. Order With Confidence.
If you are ready to order, then follow the checks below to select the correct options. If you have not learnt about the PatioLock™ system and its benefits yet then go to the homepage now.
THE SYSTEM IN 20 SECONDS
Two Locks. Your Existing Locks Stay Untouched.
The PatioLock Insert uses two adjustable fittings on the pet-door panel. One connects to the wall frame, and the other receives the existing glass-door handle lock. No transferring the original locks or screwing into the door frame on compatible systems.
Watch how the two locks work. PatioLock engages the original fittings on both sides without moving your glass-door locks.
Pet door to wall frame
The PatioLock hook engages the existing wall-frame striker, securing the insert to the frame.
Glass door to pet door
Your existing glass-door handle hook locks into PatioLock's adjustable striker. The original lock stays untouched.
Fittings attach to the pet-door panel using the supplied Allen keys. Note - Locking a security-screen will require transferring the striker/s on to the adapter using a few screws but there remains no damage to the sliding door system as you can put the striker/s back in their original position if/when you move home.
CHECK BEFORE YOU ORDER
Four Quick Checks to Select the Right Options.
Check your lock type, frame height and depth & flap size. Then order using the options at the top of the page.
Check Your Sliding-Door Lock Type
Open your sliding glass door and flick the lever. Either one or two hooks will rotate out from the side of the glass door handle. Note for TWO hook locks, you will need to depress and hold the little chrome pin in on the side of the handle with your finger tip for the hooks to release and rotate. Then just select either the ONE or TWO hook lock at checkout to match your lock. Pictures below for reference.

One-hook or two-hook?
Single hook: Compare your handle with the single-hook examples in the top portion of the photograph.
Two hooks: Compare with the two-hook examples in the lower portion.
Your lock hook/s must rotate out from the side of the glass door handle frame, not from inside the aluminium frame around the glass.
Unsure which type you have? Send photos of the handle and wall-frame striker to modpetdoors@gmail.com before ordering.
Check Your Sliding-Door Frame Height
The standard PatioLock height guide is 199–211 cm. Two measurements matter:
Red arrow: From the floor-track base to the LOWEST point of the top track — at least 199 cm.
Blue arrow: From inside bottom to inside top of the glass door frame - max 211cm.
Extension kits are available for taller Medium and Large models; read the technical details and add Height Extension Kits to cart via shop-pet door options.

Choose the Correct Flap Size for Your Pet
Reference the flap sizes below relative to the shoulder height of your pet. The Flap height is measured from the ground to the top of the flap — not from the top of the bottom rail. Ideally, we recommend that your dog is shorter than the top of the flap. However, many dogs can duck easily 10cm or more if they are agile and healthy.
| Flap size | Width | Ground to top |
|---|---|---|
| Medium | 22 cm | 41 cm |
| Large | 27 cm | 61 cm |
| XL | 39 cm | 71 cm |
Check Wall-Frame Depth for Adjustable Screen Door Adapter Compatability.
Open your Glass Door and Screen Door and face the frame running up the wall that the doors close in to. Then just measure across the entire frame from inside the house across to the outer edge of the screen door channel as per the red arrow in the picture to the right. Do not include lock mechanisms.
The frame measurement for common frames is 10cm or less - this is compatible with the 10cm deep Adjustable Screen Door Adapter- recommended to seal and secure the GLASS door and also allow for screen door use (If you have one).
Note that stacker doors with multiple panels or commercial style frames that are much thicker than common single glazed frames require individual assessment. Email pics and/or refer to the FAQ page item on stacker doors for more info.

READY TO CONFIGURE YOUR ORDER
Select Your Four Product Options.
Once the four checks above are complete, use the patiolock drop down options at the top of the page to select your options. Note the shipping zones outlined in the section above and the pre-orders for Black, Primrose and Silver-grey doors due late December 2026 - early January 2027.
Flap size
Choose Medium, Large or XL using the measurements above.
Colour
Choose a finish available in your preferred size: Satin Black, Pearl White, Primrose or Silver-Grey.
Adjustable adapter
Recommended for glass-door sealing and continued use of a compatible screen door.
Lock kit
Choose the one-hook or two-hook configuration to suit your existing glass-door handle.
REAL CUSTOMER REVIEWS
Customers Who Installed PatioLock™
“Installed it myself!!! The hardest part was opening the box”
Modern Pet Doors customer review
“Very impressed with the quality of both the product and the customer service. Thank you. I have recommended this company to all my friends.”
Modern Pet Doors customer review
RECOMMENDED ADDITION
Why Add the Adjustable Screen Door Adapter?
The name understates its purpose. The adapter helps create a closing channel for your sliding glass door, even if you do not have or use a flyscreen.
Locking a separate security screen may require screws and tools. This is distinct from the standard screw-free PatioLock glass-door installation.
QUICK BUYER SUMMARY
Five Problems PatioLock Is Designed to Avoid
These points are explained in greater detail on the homepage. They are included here as a brief buying reminder.
Compatible standard PatioLock configurations avoid transferring the original glass-door locks and drilling into the door frame. The optional adapter is recommended for improved sealing.
DETAILED PRODUCT INFORMATION
Frequently Asked Questions & Technical Details.
Choose a question to reveal its answer. Original technical information is also retained in the reference sections below, so you can progressively review and edit the wording without losing it.
Locks, suitability and door height
Special sliding doors and hardware
Choosing, fitting and using the product
Full Original Product Information
These sections retain the detailed wording from the original product description. Open only those you need; dates, availability and historical marketing claims should be reviewed before republishing as current claims.
READY TO ORDER?
Choose Your PatioLock™ Options and Add to Cart.
For any uncertainty about compatibility, send photos of your lock and measurements to modpetdoors@gmail.com or phone 0431 908 929.
Customer Reviews 5 (154 Reviews) Write a Review
Awesome Product!!!
Super easy to select product, fast delivery (delivered within 2 business days) and works as expected. Really happy with the product and already had others ask where I got mine. What really sets this product apart is the colour choices and you don't need to drill into existing structures. If I ever move (and need a different colour), I will be back. Thank you!!!
Low profile for aging pooches
I purchased this product primarily as it's low profile on the door to the frame would make it easier for our furbaby to easily access the outside with her arthritic joints. The added bonus was the security it provided to our home without having to drill and screw in additional bolts. Dispatch was fast and reliable, product was well packed and protected. As a lay person the installation was a bit more challenging than I had anticipated and the instructions a little complex, but am very happy with the end result and would definitely recommend this product above any we've previously used or installed.
Best pet door
This door is fantastic, our last door was awful it was unsecured, draughty and it let in heaps of insects. The modern pet door has resolved all these issues and it looks much better too! I wouldn’t hesitate in investing in one of these doors.
Pet Door
Great product, super back up service and advice. Highly recommended. AAAA++++++
Patio lock model
Looks fantastic, very sturdy and safe. Well worth it should have got one sooner
A good option for renters
I got this as Im renting and couldn’ t have anything permanent. The instructions were a little confusing as Im not technically minded but got there in the end (an installation video would be helpful if anyone reads this). I have a very small chihuahua under 2kg and he is able to use the medium door perfectly. No more getting up at night! Would recommend if you don’t want something permanent in your home.
PatioLock Dog Door
Brilliant, only critique from my husband who installed it is that he'd like more pictures in the instructions.
PatioLock Model: Ultimate in Security & Convenience. Locks with NO Screwing!
The door was delivered very promptly. No problems in installing it. My dog started using it straight away. This has been a blessing during the storms we have been having lately.
Glass patio dog door
Excellent product, great packaging, fast delivery. This door looks great and works well.many favourable comments have been received. However, installation instructions are not the best. It needed 2 very good handymen to install. A better video would be so helpful.
Modern Pet Door for Sliding Door
Fantastic product. Excellent quality, fits and works perfectly. I was able to install it myself without any additional tools however I do think the paper instructions could be a little more detailed. Both our puppy and us are very happy!

Original flap-lock panel illustration