A: Panels are rated in NRC (Noise Reduction Coefficient) and our bass traps in Sabins (unit of measure of seem absorption in the inch-pound procedure). All of bass traps and panels are independently analyzed by Riverbank Acoustics. The upper the absorption # the greater the panel is. Our payment https://zanderzmxla.blogdiloz.com/33714951/top-latest-five-window-seals-urban-news