The purpose of this Standard is to establish a nationally recognized voluntary consensus standard for particleboard which provides a common basis for understanding throughout the particleboard industry and among and between those specifying and usin industry products. This Standard covers particleboards which are made primarily from cellulosic materials (usually wood). This standard includes definitions, dimensional tolerances, physical and mechanical property requirements, and the maximum formaldehyde emissions for different grades of particleboard. Also included are test methods, inspection practices, and methods of identification. The mechanical property requirements are not engineering design values.