This International Standard specifies test procedures and performance requirements for determining the protective ability of panel materials used in forestry-machinery operator enclosures intended to protect the operator against sawteeth thrown by circular-saw components. This particular type of hazard is specifically defined by the size and velocity of the sawteeth and is unique to these cutting devices. This International Standard is applicable to panel materials for forestry machines defined in ISO 6814 that include an integrated or attached circular sawing device, controlled or powered by the primary machine (e.g. topping saws, felling saws or bucking saws). It does not address protection from chain-shot hazards (see ISO 11837).