80mm vs 100mm Vertical Blind Slats: Which Should You Choose?

In Summary

✓  Vertical blind slat width affects visual proportion, the number of slats needed for a given window width, and how the blind stacks when open.

✓  80mm slats create a finer, more subtle appearance, suited to smaller windows or more understated interiors.

✓  100mm slats create a bolder, more graphic look with fewer individual slats, suiting wide windows and contemporary spaces.

✓  TOSO's vertical blind system offers both widths as part of its full customisation options.

✓  softhome, as TOSO Japan's Singapore Gold Partner, can advise on slat width based on window proportions and interior style.

A Decision Easy to Skip Past During Specification

Because vertical blinds are so often specified for large commercial or open-plan residential windows where the overall project has many other moving parts, slat width can end up decided almost by default rather than deliberately, simply because it's one of the smaller line items in a longer specification conversation. Given how visibly it affects the finished result across a wide glazed wall, it's worth deliberately pausing on this decision rather than letting it pass by unconsidered.

Why Slat Width Matters for Vertical Blinds Specifically

Vertical blind slat width has a similar effect on visual proportion as slat size does for venetian blinds, but the vertical orientation and typically much larger scale of vertical blind installations — often covering full-height glazing or wide sliding doors — makes the width decision proportionally even more significant. Choosing between 80mm and 100mm slats affects how many individual slats a given window width requires, how the blind reads visually at a distance, and how compactly the blind stacks when drawn open.

80mm Slats: Finer Detail, Subtler Presence

80mm slats create a finer, more detailed appearance across a vertical blind installation, with more individual slats needed to cover the same window width compared with the wider option. This finer scale suits smaller to medium windows where a bolder slat might feel disproportionately heavy, and it also tends to complement interiors with more detailed or traditional design elements, where a subtler, less graphic window treatment fits more naturally into the overall visual language of the room.

The trade-off is a larger number of individual slats and, correspondingly, a slightly bulkier stack when the blind is drawn fully open, since more slats need to gather at the side or centre compared with fewer, wider alternatives.

100mm Slats: Bold, Contemporary Scale

100mm slats create a bolder, more graphic appearance with fewer individual slats required across the same window width, which suits large windows, wide sliding glass doors, and contemporary interior styles particularly well. Fewer slats also mean a more compact stack when the blind is fully open, a genuine practical advantage on very wide installations where minimising the stacked width matters for both appearance and available wall space.

This wider slat option tends to read as a deliberate, architectural design choice, and it's an especially common choice for offices and commercial spaces with large glazed walls, where the bolder scale suits both the window size and a typically more contemporary design brief.

TOSO's Vertical Blind System and Slat Width Customisation

As part of softhome's role as TOSO Japan's Singapore Gold Partner, both 80mm and 100mm slat widths are available within TOSO's fully customisable vertical blind system, alongside choices around fabric colour, operation type, draw direction, and headrail colour. This means slat width doesn't need to be decided in isolation — it's one of several coordinated decisions made together during the TOSO customisation process to ensure the final result suits both the window and the room's broader design direction.

A Note on Mixed Widths Within the Same Home

There's no requirement to use a single slat width consistently throughout an entire property, and a home with both large open-plan glazing and smaller individual bedroom windows can reasonably use 100mm slats in the former and 80mm in the latter, provided the overall material and colour palette stays coordinated. This room-by-room approach tends to produce a better proportional result than forcing a single width choice across genuinely different window scales.

Matching Slat Width to Your Specific Window

As a general starting point, taller and wider windows tend to suit 100mm slats better proportionally, while narrower or shorter windows often suit 80mm slats. Interior style should be weighed alongside window size, since a large window in a more traditional or detail-oriented interior might still lean towards 80mm for stylistic consistency, even though window size alone might suggest the bolder option. Viewing physical samples against the actual window in question remains the most reliable way to confirm the right choice before finalising an order.

Frequently Asked Questions

Which vertical blind slat width is more popular in Singapore, 80mm or 100mm?

Both are commonly used, with the right choice depending on window size and interior style rather than one being universally preferred. Larger, more contemporary spaces often lean towards 100mm, while smaller or more detail-oriented interiors often suit 80mm.

Do wider vertical blind slats stack more compactly when open?

Yes. 100mm slats require fewer individual slats to cover the same window width, which generally results in a more compact stack when the blind is fully drawn open compared with the same width covered in 80mm slats.

Can I choose slat width as part of TOSO's vertical blind customisation?

Yes. Slat width is one of several customisable options within TOSO's vertical blind system, alongside fabric colour, operation type, draw direction, and headrail colour, all specified together during the consultation process.

Is 100mm too bold for a smaller room?

It can look disproportionate on a genuinely small window, which is why 80mm is often the more suitable choice for smaller spaces, though this depends on the specific window's actual dimensions rather than the room size alone.

Should I choose slat width based on window size or interior style?

Both matter and are worth weighing together. Window size is the primary practical consideration, but interior style can reasonably shift the decision in either direction, which is why softhome discusses both factors during consultation rather than relying on window size alone.

Ready to Get Started?

Every home and window is different, and the right combination of curtains, blinds, wallcoverings, or window films depends on your specific space, light conditions, and lifestyle. softhome's consultation process is built around understanding your room before recommending a solution, rather than starting from a one-size-fits-all product list.

If "80mm vs 100mm Vertical Blind Slats: Which Should You Choose?" has raised questions specific to your own home or office, softhome's team is on hand to talk it through. Book a consultation with softhome or explore the full product range to see what's possible for your space.

About softhome

softhome is a Singapore-based specialist in curtains, blinds, wallcoverings, and window films, working with homeowners, designers, and commercial clients across residential and business spaces. The softhome range spans day and night curtains, roller and venetian blinds, motorised systems powered by Somfy, outdoor Ziptrak blinds, premium Hunter Douglas products, and wallcovering collections from Japan, Sweden, and Britain.

Every softhome project begins with a personalised consultation, considering a room's light, orientation, humidity, and everyday use before any fabric, material, or mechanism is recommended. From measurement through to professional installation, softhome's team manages the process end to end, with a showroom at 48 Tannery Lane, #04-00A, Tailoo Building, open by appointment Monday to Friday.