About Rockfon® Plenum Barrier Board™Rockfon® Plenum Barrier Board™ is a noise blocking panel manufactured with a 1.5"ќ thick stone wool core and a fiber-reinforced foil facing on one side. The 24"ќ wide x 48"ќ long boards are lightweight, easy to cut and can be installed vertically and quickly in suspended ceiling or raised floor plenums above or below interior partitions. Rockfon Plenum Barrier Board can also be laid directly on top of Rockfon stone wool ceiling panels. When combined with Rockfon ceiling panels, Rockfon Plenum Barrier Board can achieve Ceiling Attenuation Class ratings of CAC 40 to CAC 58 to match the Sound Transmission Class ratings of partitions between 40-58.
High acoustic performance
Class A according to ASTM E84
Stone wool is inherently mold and mildew resistant with no added antimicrobials