The groundbreaking MultiZorber OC703 features the Owens Corning 703 substrate and the InvisiGrommet mounting system. Features include: · 2 inch. - 3 pcf Owens Corning 703 fiberglass board with nylon sailcloth on the back and Guilford FR701 fabric on the front · Best looking and lightest weight OC703 product on the market · Portable acoustic environment · NRC 1.05 against a wall or ceiling, even more as a free-standing baffle · InvisiGrommet mounting system, with the grommets on the back, allows for the easiest, least intrusive mounting of any acoustic panel · 2448 panels can be hung vertically and horizontally · Optional offset spacer for increased absorption · Install in a corner as a bass trap · Class A fire rated, made in the USA