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89mm vs 127mm Vertical Blind Slats

89mm vs 127mm Vertical Blind Slats: Which Size Works Best?

When selecting vertical blinds Perth, one detail that often gets overlooked is slat width. Yet the difference between 89mm and 127mm vertical blinds can completely change how a window looks and functions. From light control to stacking space, the size of each slat plays a key role in how the system performs across different window types.

At Marvel Blinds, we guide homeowners through this decision when designing custom vertical blinds in Perth WA. Choosing the right slat size is not just about appearance—it directly affects usability, coverage, and how well the blinds suit your space.

What 89mm and 127mm Slats Actually Mean in Practice

Vertical blinds Perth, are made up of individual fabric panels that hang from a track system. These panels—also known as slats—are available in different widths, with 89mm vertical blinds and 127mm vertical blinds being the most common options.

An 89mm slat provides a narrower profile, meaning more slats are used across the width of the window. This creates a more detailed and traditional finish.

A 127mm slat, on the other hand, is wider and covers more area per panel. This results in fewer slats across the window and a cleaner, more contemporary look.

Both options operate in the same way, but their visual and functional differences become more noticeable depending on the size of the window.

Side-by-Side Comparison: 89mm vs 127mm Vertical Blinds

This comparison helps highlight how vertical blind slat sizes influence both the appearance and performance of the blinds.

Where 89mm and 127mm Vertical Blinds Work Best

89mm Vertical Blinds

Narrow slats are often chosen for smaller or more standard-sized windows. Because they use more panels, they allow for finer adjustments when controlling light and privacy.

In Perth homes, 89mm vertical blinds are commonly used in:

  • bedrooms with moderate window sizes
  • home offices where controlled light is important
  • spaces where a softer, more detailed look is preferred


They also work well when you want a slightly more classic finish rather than a bold, modern style.

Wider slats are better suited for larger openings where functionality and clean lines matter more. Because each slat covers more space, fewer panels are needed across the window.

This makes 127mm vertical blinds Perth installations ideal for:

  • sliding glass doors
  • patio and balcony access
  • floor-to-ceiling windows
  • open-plan living areas


With fewer slats, the blinds stack more neatly to the side, allowing better access and a more streamlined look.

127mm Vertical Blinds

Light Flow, Privacy, and Daily Use

Slat width also changes how light moves through a room. With 89mm vertical blinds, the smaller panels allow for more precise adjustments, which can be useful when trying to control glare without fully blocking light.

In contrast, 127mm vertical blinds create broader light gaps when tilted, allowing more natural light into the space while still maintaining privacy.

For busy areas such as living rooms or sliding door access points, wider slats tend to feel more practical because they move more freely and require less effort to operate.

Visual Impact on Interior Spaces

The overall look of the room can be influenced subtly by the size of vertical slats. Wider slats give more minimal and architectural feel while narrow slats create a textured appearance. 

In modern interiors across Perth WA, many homeowners prefer wider slats because they align better with contemporary design styles. However, in smaller rooms or more traditional interiors, 89mm slats can feel more balanced.

The decision between the two usually lies in the way you would like the blinds to match your space and not just the functional performance of the blinds. 

Choosing the Right Fit for Your Windows

The size and purpose of the window is the key consideration when deciding between 89mm vs 127mm vertical blinds. 

For smaller windows or spaces where precise light control is needed, 89mm slats are a practical choice. For larger openings or areas where clean lines and easy access matter, 127mm slats usually deliver better results.

At Marvel Blinds we assist homeowners in selecting custom vertical blinds in Perth, based on the size of the window, the purpose of the room and the interior design style. By selecting the right slat size, it becomes easier to achieve both functional performance and a balanced visual finish.

FAQs

The selection is based on window size, 89mm is recommended to fit in the standard windows and 127mm is applicable in large openings and sliding doors.

127mm vertical blinds Perth installations are preferred for sliding doors because they stack neatly and allow smoother access.

Yes, narrower slats allow more precise light adjustment, making them ideal for rooms needing controlled lighting.

Yes, wider slats create a cleaner and more contemporary look, which is popular in modern Perth homes.

Yes, 127mm slats can admit more light when tilted than slimmer slats.

127mm vertical blinds are more suitable for large windows because they require fewer panels and provide better coverage.

Yes, 89mm blinds are still widely used for bedrooms, offices, and smaller window spaces.

Yes, wider slats require less stacking space, while narrower slats need more room when fully opened.

Yes, custom vertical blinds Perth WA can be made with either 89mm or 127mm slats based on your window requirements.

Both of them are easy to clean, although the blinds of 127mm have a smaller number of slats, which leads to the clean effect being slightly faster.