Quadrilateral — Openbook

Openbook designed a ceiling system to provide an orderly and precise reading of the space through a clean and repetitive geometric composition. Quadrilateral works from formal simplicity to generate balanced surfaces that integrate naturally into contemporary interior architecture projects.

Its modular design allows for the creation of continuous patterns that add rhythm and visual depth to the ceiling, reinforcing the sense of order and serenity in the space. The straight, proportionate geometry of the pieces facilitates their adaptation to different scales and spatial configurations.

Quadrilateral improves the acoustic performance of the environment while maintaining a clean and timeless aesthetic. Its ability to integrate with lighting, climate control, and other technical elements makes it a particularly effective solution for offices, hospitality venues, and retail spaces where visual clarity and comfort must coexist in perfect balance.

Technical specifications

Design by:

Openbook

Technical sheet

ECOcero sound-absorbing panel, Regenerative Textile Fiber, Quadrilateral model by Openbook, measuring 595 × 595 × 144 mm and 9 mm thick. It consists of a 9 mm thick grooved base panel measuring 595 x 595 mm and inserted 9 mm thick baffles forming a tongue-and-groove panel. Supplied unassembled for on-site assembly and installation. Available installation options:

• Supported on T24 technical ceiling profiles.
• Fixing using ECOcero brand adhesive for direct fixing to support.
• Installation with direct mechanical fixing to support using screws.

9mm thickness available in 24 base colors.

CE marked. Thickness 9 mm Euroclass B-s1,d0 fire reaction.

LEED® (USGBC) Pass and BREEAM® Exemplary Level certifications. Product with GRS certified recycled content, Environmental Product Declaration (EPD) and Product Health Declaration (PHD). OEKO-TEX® Standard 100 certified, low VOC emissions Class A+, ASTM G21 antifungal protection, REACH and RoHS compliant, and CE marked. Certified sound absorption, conductivity, and thermal resistance performance, with a Euroclass B-s1,d0 fire reaction classification.