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HEXAGO CM-D FLAT · 432 × 500 × 77 mm · Sound Absorption Class D · αw 0.45
HEXAGO CM-D FLAT is a flat hexagonal acoustic panel. Current manufacturer data states 432 × 500 × 77 mm and 3.8 kg per panel; documented ratings are Class D, αw 0.45, NRC 0.60, SAA 0.58 and an absorption range of 200–1000 Hz.
The 2025 acoustic catalogue documents Class D, αw 0.45, NRC 0.60, SAA 0.58 and 200–1000 Hz. No diffusion curve is documented for FLAT. The catalogue drawing labels the height as 433 mm; current manufacturer data uses 432 × 500 × 77 mm.
HEXAGO CM-D FLAT combines a perforated flat front with documented Class D sound absorption. The HEXAGO acoustic series was developed in cooperation with acoustic specialists from AGH University of Science and Technology in Krakow.
The manufacturer’s acoustic catalogue states αw 0.45, NRC 0.60 and SAA 0.58 for HEXAGO CM-D FLAT, with an absorption range of 200–1000 Hz. The FLAT function is stated as absorption. The diffusion range of the 3D HEXAGO CM-D variant is therefore not transferred to CM-D FLAT.
“The current manufacturer page lists oak, American walnut and ash, with hard-wax oil or varnish.”
The documented build-up consists of a perforated 2D FLAT front, a box made from veneered wood and wood-based materials, and a core of absorbing wool and an acoustic membrane. HEXAGO CM-D FLAT is therefore not a solid-wood-only panel.
The current manufacturer page lists oak, American walnut and ash, with hard-wax oil or varnish. Oak colour codes C01 to C06 are shown. Current product data uses 432 × 500 × 77 mm; the 2025 technical catalogue drawing labels the height as 433 mm.
The published manufacturer quantity guide explicitly applies to HEXAGO P-A and HEXAGO CM-A. CM-D FLAT therefore does not inherit that room-size table or a fixed panels-per-square-metre wall rule. Sizing is project-specific.
The manufacturer lists HEXAGO CM-A, HEXAGO CM-D, CARO MINUS and CARO as panels that can be combined with CM-D FLAT. The product page describes simple hanging installation, while the acoustic catalogue states free-hanging mounting on screws. DEKOSTYL supports sampling and technical project coordination as official distribution partner.
HEXAGO CM-D FLAT for documented Class D absorption
HEXAGO CM-D FLAT is a flat hexagonal acoustic panel from the HEXAGO series. The current manufacturer data states 432 × 500 × 77 mm and 3.8 kg per panel. The manufacturer’s acoustic catalogue documents Absorption Class D, αw 0.45, NRC 0.60 and SAA 0.58, with an absorption range from 200 to 1000 Hz. No diffusion curve is documented for the FLAT configuration.
HEXAGO CM-D FLAT is manufactured by Form at Wood in Europe. DEKOSTYL supports selection, sampling and technical project coordination as official distribution partner.
HEXAGO CM-D FLAT in Interior Spaces
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Acoustic systems – test data is product- and configuration-specific
The current product specification lists oak, American walnut and ash for HEXAGO CM-D FLAT, with hard-wax oil or varnish as finish options.
Available CAD, 3D and project-specific planning files are managed centrally in the architect area.
Manufacturer catalogues, colour chart and installation guide – available as PDF without sign-in.
Price and terms are calculated according to quantity, timber, finish, specification and project requirements. Registration merely to view a price is not required.
Request project pricingHEXAGO CM-D FLAT is used as a finished acoustic module. Cutting the panels is not intended for the regular modular installation.
Wood species and finish are selected for the complete panel. Separate edge veneering is not intended for the finished HEXAGO module.
No unverified panel quantity is transferred to CM-D FLAT from the P-A/CM-A calculator. Quantity is coordinated for the specific project based on room, surfaces, use and acoustic target.
No dedicated room-area-to-panel-count table has been verified for HEXAGO CM-D FLAT. The published manufacturer quantity guide explicitly applies to HEXAGO P-A and HEXAGO CM-A. It is therefore not transferred to CM-D FLAT, and no fixed panels-per-m² wall rule is calculated.
The published acoustic values apply to the documented test and mounting configuration. Room geometry, surfaces, furniture, glazing and intended reverberation targets must be considered for the specific project.
The DEKOSTYL project team supports technical coordination. Acoustic evidence, lighting options and bespoke manufacturing are reviewed by product and project with the relevant manufacturers or partner workshops.
Request CM-D FLAT project
Technische Unterlagen und Muster
Wood and finish samples for HEXAGO CM-D FLAT can be requested through DEKOSTYL. Availability, contents and cost are confirmed for the specific project.
* Availability, contents and cost of HEXAGO CM-D FLAT sampling are confirmed by DEKOSTYL for the specific project.
Acoustic data, dimensions, materials, installation & project planning
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