Gyproc® Activ'Air board is a high-performance board consisting of an aerated gypsum core with special additives encased in, and firmly bonded to, strong paper liners. Gyproc Activ'Air boards improve indoor air quality by taking formaldehyde out of the air and converting them into safe, inert compounds that, once captured in the board, cannot be released back into the air. Product Application Gyproc® Activ'Air is ideal for buildings with good indoor air quality requirements. It is suitable for most system applications where normal fire, structural and acoustic levels are specified. Suitable for direct decoration.