The trend for large-format glazing continues to shape modern architecture, delivering spacious interiors and a contemporary aesthetic. At the same time, such solutions require precise and reliable light control to ensure everyday comfort. Responding to these needs, EKO-OKNA introduces the B50 and B55 internal cassette roller blinds—systems designed specifically for large glazing formats.
The B50 and B55 cassette blinds have been developed as a natural complement to EKO-OKNA’s joinery portfolio. Where standard solutions, such as the B5 system, reach their limits, the new heavy-duty blinds offer extended capabilities tailored to wide and demanding installations.
B50 Cassette Roller Blind – Functional Elegance
The B50 cassette roller blind is designed for glazing up to 2.5 metres wide. The system allows for flexible installation on the wall, ceiling, or within the window recess. Thanks to its compact cassette, the blind integrates discreetly into various interior styles while providing effective light regulation and everyday convenience.
B55 Cassette Roller Blind – Designed for the Largest Formats
For glazing reaching up to 3 metres in width, EKO-OKNA offers the B55 cassette roller blind. Its robust construction, stable box that can function as a mounting rail, increased load-bearing capacity, and functional guides ensure reliability even in the largest formats.
Added Value for Partners and Investors
By including the B50 and B55 systems in their offer, partners gain a comprehensive tool for project completion and post-installation comfort – when end users fully recognize the importance of effective shading solutions.
Key benefits include:
» Complementarity – large glazing units can be paired immediately with a dedicated shading solution, saving time for clients and increasing order value.
» Clean and fast installation – no structural interference with the building is required, an advantage particularly appreciated at the finishing stage.
» Automation and comfort – both systems can be equipped with remote-controlled motors, meeting modern Smart Home standards.
» Design flexibility – a wide selection of fabrics, including blackout and day-and-night options, allows for full customization to client preferences.
With the introduction of the B50 and B55 cassette roller blinds, EKO-OKNA enables partners to enhance their offers and increase the value of every project. The new systems can be quoted independently via eko4u or by contacting the EKO-OKNA Sales Department.

