Louvre profiles
The main difference lies in the proportions and view through the louvres
The louvre width determines how many horizontal lines you see and how much space appears between the louvres when they are open. That is why we always compare louvre sizes with the actual window dimensions.
The exact louvre sizes available vary by collection and are checked during your consultation.
Louvre size and appearance
The right louvre size makes all the difference to visual calm and the view through the louvres
Louvre width determines the shutter’s horizontal rhythm. That is why we never choose based on a number alone, but on the proportions between the window, panel, interior and desired sightline.
More horizontal lines and a finer overall look.
Fewer lines and a more open visual effect.
Not every louvre size is available in every collection.
Compare several sizes when open, tilted and closed.
Comparison
What should you consider when choosing a louvre size?
How we work
From window to louvre size
View window
The height, width and window-frame configuration are assessed.
Choose collection
The material determines which louvre sizes are technically available.
Visual comparison
We compare the sizes for visual calm, view through the louvres and interior style.
Finalising the details
Louvre size, colour, operation and panel configuration come together in the quote.
Personal made-to-measure advice
Unsure which louvre size to choose?
Send us a photo of your window or book a measuring appointment. We will recommend the proportions that suit the window and the collection you have chosen.
47 mm: subtle and refined
The smallest louvre creates a fine-lined look and works well with compact windows or a more classic style.
63 and 76 mm: versatile mid-range sizes
These sizes combine a calm layout with good light control and suit many window formats.
89 mm: spacious and calm
The widest current louvre creates fewer horizontal lines and offers excellent visibility when open. The 89 mm louvre is also the standard size for DeVo Aluminium.
In practice
See how these choices work in real homes
The projects below were measured and installed by DeVo. You can see real colours, window shapes and technical solutions.
Frequently asked questions
Which louvre size is best for my window?
It depends on the window height, panel width, desired view through the louvres and collection chosen. Smaller louvres create more horizontal lines; wider louvres create a calmer look.
Is a wide louvre always better for a large window?
No. The panel configuration, window-frame lines and interior style are at least as important. The best louvre size is the one that supports the proportions of the window as a whole.
Can I compare different louvre sizes in the showroom?
Yes. The difference is clearest when you view the louvres open, half-tilted and closed next to one another.
How can I assess this choice in my own interior?
View samples in daylight alongside the window frame, wall, floor and fixed furniture. A colour or proportion may look different on a small screen than across an entire window.
Is the same solution suitable for every window or room?
No. Compare 47, 63, 76 and 89 mm. The window type, dimensions, installation position, material load and everyday use are assessed for each situation.
What does DeVo check during the professional site survey?
We take measurements at multiple points and check the frame, reveal, handles, opening direction, windowsill, available panel clearance, and the desired louvre and panel configuration, among other details.
How do louvre size and panel configuration affect the result?
They determine how many lines you see, how open the view through is and how practically the panels can open. The proportions in relation to the window matter more than one standard size.