Round Hole Noise Barrier 1, beautiful 2, uniform hole 3, smooth surface 4, low cost

Materials: can be stainless steel sheet,aluminum sheet,etc .

Superiorities:beautiful,firm ,uniform hole,smooth surface,low cost ,lighter,easy to install and maintain etc . Especially when the noise is about 400-800Hz, the Round hole noise barrier will show its huge effect .

Round Hole Noise Barrier