Flat slats for venetian blinds are frequently chosen by architects because of their elegant and unobtrusive appearance. Thanks to their wide range of system variants, external venetian blinds with flat slat geometry can be easily integrated into any design.

External venetian blind with flat slats are ideally suitable for small window areas due to their delicate design. They provide an excellent view out and require very little space because of their minimal cover panel height.

WAREMA offers flat slats in various slat widths. This affects the appearance, light image, and the impact on the facade.

  • Good view out while simultaneously providing effective sun shading and visual privacy
  • Delicate appearance for a calm, modern window image
  • Compact integration in limited installation space
  • Precise light guidance thanks to infinitely variable tilting
  • Design freedom through colour coordination of slats and visible aluminium parts

Flat slats in different widths

WAREMA offers flat slats in various slat widths. This affects the appearance, light image, and the impact on the facade. Which width is sensible depends primarily on the window format, facade grid, and desired view out.

Guidance: rail or cable

  • Rail guidance appears robust and calm in line guidance.
  • Cable guidance supports a particularly delicate view.

Which guidance fits is decided by the detail: reveal, fixing, wind load, and desired appearance

Windra flat slats by WAREMA are intended for situations where the external venetian blinds are more exposed to wind. The slat of the external venetian blinds is constructively designed to remain stable and run reliably.

What makes the Windra flat slat unique:

  • Reinforced slat design for more stability
  • Suitable for wind-exposed building sides and wind speeds up to 90 km/h
  • Depending on the design, rail or cable guidance is possible

Colour as part of the architectural concept

The slat colours of the flat slats can be matched to the colour of the window frames, facade and other building components. This creates a harmonious overall appearance without the sun shading system being "imposing".

Matte or glossy: the effect is noticeable

Depending on the colour tone and surface, the facade effect changes significantly:

  • Matte appears more restrained and reduces reflections
  • Glossy appears more technical and emphasises contours more strongly

Tip: Define slats and visible aluminium parts (e.g., guide rails, cover panels) as a cohesive design package. This ensures the appearance truly matches.

Visit us at one of our Sunlight Experience Centres or contact your local specialised retailer directly to get a quote for your own customised external venetian blinds. You can find an overview of the best qualified specialists in your region here. At the listed companies, you can not only buy a custom-made external venetian blind from WAREMA, but you will also receive outstanding service, including expert advice, professional installation and reliable after-sales management.

Venetian blinds

Window venetian blinds

Wind-stable external venetian blinds

External venetian blind manufacturer

Electric venetian blinds

Venetian blind accessories

Dim-out external venetian blinds

Slat geometries

The WAREMA brand stands for high-quality sun shading solutions that adapt flexibly to your life. As a leading European manufacturer, the family-owned company develops individual solutions for windows, patios, balconies and outdoor areas. The portfolio ranges from external venetian blinds and roller shutters to awnings and patio roofs, as well as insect screens and intelligent sun shading control systems. In cooperation with qualified specialist companies, all solutions are carefully planned and professionally installed on site. You benefit from long-lasting quality, reliable service and enhanced comfort – for a harmonious interplay of light, shade and living space, today and in the future.