A roto-moulded hollow cuboid noise panel which includes three pairs of opposed surfaces, each pair of opposed surfaces connected via an adjacent pair of opposed surfaces which collectively define a hollow-interior; wherein a pair of opposed surfaces defining the largest surface areas of the cuboid are further connected via Kiss-Offs located in at least two spatially distinct regions; wherein said Kiss-Offs extend in from one surface of the opposed pair of surfaces a distance sufficient to contact the other opposed surface.