The various sound absorption data (αp, αw, absorption class) have been calculated in compliance with ISO 11654(LINEA + LR 20mm acoustic complement on E250mm plenum).
Finish / Reaction to fire (to EN 13501-1)
Fire-retardant, Euroclass standard B-s1, d0 or B-s2, d0 depending on the type of wood and finish.
Back panel
rigid acoustic rockwool slabs (2.4 kg/m²), covered with black fleece finish (size: 600 x 600 mm; thickness: 20 or 22 mm).