When choosing shutters for your windows, one of the most important decisions you’ll make is the slat size. While colour and frame style affect the overall look, the size of the slats directly impacts how much light enters your space and how your room feels throughout the day.
At first glance, the difference between 47mm, 64mm, 76mm, 89mm and 114mm slats may not seem dramatic, but the effect on lighting, privacy, and style is huge. Here’s how each size can change the atmosphere in your home:
47mm, creates a classic and cosy feel.
Lighting – the smaller of the slats, means it allows less light through when open, creating a softer, more diffused glow.
Best for – Smaller windows or rooms where you want a snug, traditional feel.
Style note – They offer a timeless, cottage like charm, perfect for period properties or spaces that feel more intimate.
64mm, with a balanced and classic style
Lighting – as they are slightly wider than 47mm, they let in more light while still maintaining privacy.
Best for – Medium sized windows or living areas where you want flexibility between brightness and seclusion.
Style note – Versatile option that works well in both modern and classic interiors.
76mm, Contemporary and vouge illusion
Lighting – There larger slats maximise natural, light and give you a wider outside view when tilted open.
Best for – Large windows, living rooms, and open plan spaces where light and space are key.
Style note – Their sleek design leans toward modern interiors, creating a bright, open atmosphere.
89mm, Bold and bright lighting
Lighting – These slats allow lots of natural light to flood in, giving your home a fresh, airy feel.
Best for – Large windows, patio doors or rooms where maximising sunlight is a priority.
Style note – A stylish modern choice that makes a strong design statement while keeping things minimal and uncluttered.
Lighting – The widest slats allow the most natural light to flood giving the brightest and airiest room possible
Best for – Large whole wall windows
Style note – Sleek and statement, smaller slats can make the window look too busy
By simply choosing the right slat size, you can completely transform how your rooms look and feel – from cosy and private to open and sun filled.
Top Tip! If your windows are tall or wide, larger slats prevent shutters from looking too busy. For compact windows, smaller slats help maintain proportion and balance.
If you want to see all our slat sizes in person, come along to our showroom as we have all our slat sizes on display! We are based in Battersea, just a short walk from Clapham Junction and Wandsworth, we also have a large carpark free to use for customers.
We look forward to hearing from you, whether it’s via email, on the phone or in person.
