The PVC Acoustical Barrier is a permanent sound wall system that consists of two different acoustical wall panels. The first wall panel, the AP1, has a noise absorption rating of NRC-1. The second wall panel is the RP1. It has an STC-36 rating, which means that it blocks and reflects unwanted noise. The panels are constructed of high quality recycled PVC which are impervious to rain, snow, and ice and they will not rust, rot, or stain. Graffiti and tagging are easily removed. The sound wall panels are 100% maintenance free. They have been wind load tested up to 140 mph. In most scenarios, using a combination of these two wall panels provides sufficient noise mitigation. Contact us for details.