- Optimises room acoustics - Main frequency range: approx. 400 to 3150 Hz - Material: Polyester acoustic foam - Flame retardant in accordance with FMVSS 302, Burning rate: < 100 mm/min - Dimensions per absorber panel (W x D x H): 600 x 600 x 70 mm - Colour: Anthracite/Silver Spruce - Set content: 4 Absorber panels EUR 145.00 - See more - Buy online