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
Patio full locking kit
Great and easy to install didn't even need the instructions.
Modern dog Doors
I have ordered a couple of these dog doors for myself and friends over the years and find the doors easy to install and the staff very helpful if I had any issues or advise. definitely recommend Modern Dogs doors
Best Door on the Market!
We’re really impressed with this pet door. It’s super sturdy, the double-locking function is excellent, and we love that it doesn’t cause any permanent damage to the door. The large opening is a great size for bigger dogs, feels really solid, and is very well made. Two thumbs up!
Patio lock model
I have large sliding doors that lead into my living room with additional crim safe screen doors. I fitted the large pet door into the frame without a problem. Excellent quality, solid and sturdy. To maintain the security of my home I do need to fit a few extra parts for the sliding and security screen door to lock as normal but modern pet doors has provided every part for the fitting aside from a door keeper. It took me longer to unwrap the door and remove the packaging than to figure out how to install. The locks are a bit tricky but worth the effort to maintain security. This is my second pet door from modern pet doors and after extensive research I find them to be the best value and a solid solution.
lockable patio pet door
Well made and works well.
White Dog Door
Really happy !! Easy to install and looks great, Zoe is very happy going in and out when she feels like it. Would really recommend this door !!
Dog door
Perfect fit easy build!! Very secure
Highly recommend
I got the PatioLock model and am so pleased with it. I’ve had one of the cheaper Bunnings door inserts before and there is absolutely no comparison in quality. This is beautifully made and I can see it lasting forever! Very solid and having the glass and/or screen locking into it is so amazing!! Not only from a security side of things but also no other little visitors sneaking in! If you aren’t sure it’s worth the extra money - trust me it is and you’ll love it. Customer service was also amazing, I was a bit confused and had to call and get help to order, and postage was super quick, I ordered on Thursday and arrived Monday morning.
Works well
I saw this door at my sisters place and thought it looked great so we ordered one for our place. We have two sliding doors that join in the middle so we also got the adapter and it works a treat. I must admit I got a little frustrated with the instructions but I'll put that down to user error. We have a frenchie and got her the medium size which is perfect.
Patiolock model
Door works brilliantly - took me a couple of hours to put it together and the instructions weren't necessarily the most clear in the world, but it looks great and works just as advertised.

Original flap-lock panel illustration