Noise protection element Type A3-e for roads and motorways

Soundproofing element made of aluminium - highly absorbent on one side

The single-sided, highly absorbent noise protection cassette made of seawater-resistant aluminium is powder-coated on the outside. It consists of statically load-bearing extruded profiles, roll-formed aluminium side panels and vertically stabilising end caps.


Sound absorption  
DIN EN 1793-1: DLA 12 dB = A4
Airborne sound insulation  
DIN EN ISO 140-3: R´W 31 dB
DIN EN 1793-2: DLR 25 dB = B3