The H9 Echo Barrier is a waterproof, flexible and lightweight noise absorption panel that provides quick and effective noise control for short or long term projects, indoors and outdoors. Reusable and portable, the Barriers are built to last for years in rugged site conditions. Echo Barriers attach to fencing, scaffolding, piling and other structures. Typically 10-20 dB reduction in the field, up to 40 dB depending on noise source and site geometry.