Hexagonal acoustic element made of high quality, self-supporting PET felt with sound absorbing properties, consisting of at least 50% post-consumer recycled PET; high quality visual and tactile surface, black; foreign fiber inclusions possible; to combine with HEX-O 500 or HEX-O MODULE 500; installation without tools; General: Luminaire / Track, Mounted, black Physical: length 750 mm, width 650 mm, height 237 mm, 3.3 kg Acoustics: Alpha w ($\alpha_w$) up to 0.95, SAC (sound absorption class) up to A, NRC up to 0.9, SAA up to 0.96, Acoustic data calculations based on HEX-O ABSORBER 1000, cavity 1cm 073-691640L