Do louvre blade sizes matter? Of course they do.
Blade sizes change how plantation shutters control light, airflow and visibility across different room types and window widths. Wider blades expose more glass when open, while smaller blades create a busier, traditional cottage appearance with narrower sightlines between each louvre. The result may affect how much light enters the room, how the window looks from inside and how many shutter louvre blades are needed. ShutterKits supplies shutters with the most popular Louvre blade size options in timber and PVC shutter ranges, while internal aluminium has 89mm as standard. Wider blades reduce the number of visible louvres in tall windows.
- Smaller blade sizes create a more traditional plantation shutter appearance.
- Large openings can accommodate all blade louvre styles along with wet areas and outdoor spaces.
Blade size changes more than the appearance of plantation shutters once they are installed. The width of each louvre may affect how light transforms a space, how open the window feels. A blade size that works well across a wide patio enclosure can feel oversized on a narrow bathroom window, which is why choosing 89mm louvre blade is the most popular.
Plantation shutters installed across Australia commonly use three blade sizes. The standard louvre blade sizes used in external aluminium shutters are 64mm, 89mm and 114mm. Interior timber, PVC shutters shutters have 63mm and 89mm, Internal Aluminium has 89mm.
Plantation Shutter Blade Sizes vs Light and Visibility
Privacy changes as your blade size changes. A 64mm blade sits closer together when tilted, so the panel blocks more view through the gaps. That tighter spacing works well in bedrooms, bathrooms and front-facing windows where you want more privacy coverage from outside.
The most popular louvre blade size across many Australian homes is 89mm. It sits comfortably between visibility and privacy without overpowering the window itself. ShutterKits regularly use this blade size across outdoor aluminium shutters for patios, verandahs and enclosed entertaining areas where airflow still matters during warmer weather.
A 114mm blade creates a more open look once tilted. You see more through the shutter and bring more natural light into the area. Due to their wide profile, these blades are designed to make a bold, dramatic visual statement while maximising light and views.
Blade selection usually comes down to practical things such as:
- The width and height of the opening.
- Whether the shutters are installed inside or outside.
- How much privacy the room need.
- The installation method is being used.
The National Construction Code has published guidelines on ventilation in Australian homes and how openings manage airflow and natural ventilation.
Shutter Louvre Blade Sizes Per Installation
Outdoor shutters deal with wider openings and different exposure to internal shutters. Using either 64mm, 89mm or 114mm blade options across hinged, fixed, sliding and multi-fold systems are all great options.
Large patio enclosures usually suit wider blades for uninterrupted views across the opening. On smaller openings with little reveal depth, narrower blades provide a better option as the space they require to open into the reveal is less than the larger blades. Proportion balance and the visual rhythm are important design elements for the interior design process.
Our internal aluminium shutters feature durable, powder-coated louvre blades designed for longevity, strength and UV protection. With a versatile 89mm elliptical blade style. The aluminium construction allows wider single panels, great for larger openings. The wider panels reduce the amount of vertical frames appearing in your line of sight, giving the overall aesthetic a lighter feel and reducing the view obstruction.
If you are comparing shutter louvre blade sizes, the reveal depth also changes how the finished shutter looks once installed. A deeper reveal can visually handle a larger blade more comfortably than a shallow face-mounted opening.
Best Louvre Blade Size For Window Proportions
The best louvre blade size for shutters usually depends on the shape and scale of the window.
Call or email us with your questions and any attachments and we’ll be happy to guide you to final specifications.
Got your plantation shutter blade sizes and measurements handy? Get your free ShutterKits quote.
FAQs
Q: What is the most common plantation shutter blade
size?
A: The most popular louvre blade size used in Australian homes is usually 89mm. They help balance light control, airflow and outward visibility across different window sizes.
Q: Are wider shutter blades better for large windows?
A: Wider shutter louvre blade size suits larger windows, fewer blades interrupt the view once the louvre blades are in an open postion.
Q: Do smaller louvre blades block more light?
A: Smaller standard louvre blade sizes create smaller spacing between blades, that may provide more privacy.
Q: Which blade size works best for outdoor shutters?
A: The best louvre blade size for shutters used outdoors depends on individual preference, with most opting for 89mm.