Window opener from Kierr
- Easily secure doors & windows ajar
- For plastic, wood and aluminum window frames
- Easy to use without drilling and screwing
- Perfect for venting against viruses
- Also ideal for pets
Easily leave your window ajar without clattering or just slamming shut.
With Kierr window stays, you can easily and securely open your window at various positions.
In addition, a Kierr window stay is particularly easy to attach.
You don’t need any tools and you can install Kierr all by yourself.
In this way you ensure that your window can remain ajar, for example to ventilate or cool the room.
The many applications of Kierr
For casement/tilting window and casement windows
For patio/balcony and outside/inside doors
For doors for animals
Without drilling and screwing
Various systems
Buying a Kierr window stay is the way to go if you’re looking for a good window stay that doesn’t require screwing and drilling into your window frame.
This is because our window stays are easy to apply using the super strong adhesive strips.
You can attach our aluminum stays to plastic, wood and aluminum without having to use any tools.
These include the Kierr Flex window openers.
The operable sash dials allow you to choose how far you open the window.
The Kierr Flex 100 creates an opening between 5 and 15 centimeters, with the Kierr Flex 200 you can open the window 15 to 30 centimeters wide.
The Kierr Flex is attached with clamps with rubber protection, so you can install it without drilling or screwing.


The Kierr Click 100 window stay works with a magnetic system, which you attach to the frame and window with very strong double-sided tape.
Again, no tools are required.
The Kierr Click 100 is ideal for tilt position windows that are always open too far.
You can reduce the opening and still open and close the window easily, without removing the Kierr Click each time.
Buying a window opener from Kierr
Check out the different Kierr window tilt positioners so you can buy the one that suits you best.
All Kierr products are easy to attach and detach, all without having to drill or screw into your window frames.
Ideal for a rental property or if you don’t want to drill.
Want to know more?
Check out our website or feel free to contact us.