Noise protection element Type A3.1-e for roads and motorways

Soundproofing element made of aluminium - highly absorbent on one side - reflection-reducing - Lightweight construction

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.

TECHNICAL DATA

Sound absorption  
DIN EN 1793-1: DLA 10.0 dB
Reflection Index  
DIN EN 1793-5: DLRI 4.40 dB
Airborne sound insulation  
DIN EN ISO 140-3: RW 31.0 dB
DIN EN 1793-2: DLR 25.0 dB 
DIN EN 1793-6: DLSI 30.7 dB
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