Envirocoustic™ Wood Wool Shapes absorb sound to tame echo and reverberation. Ecologically, Wood Wool Shapes are simple to produce by combining water, Portland cement and wood fibers. Highly resistant to microbial and fungal growth, Envirocoustic Wood Wool Shapes are Class-A Fire Rated, pass the NFPA 286 fire test, and meet the California Department of Public Health VOC emissions standards, making them eligible for LEED credits as well as a sound choice for a variety of public and private venues.