1.范围1。1本标准给出了通过自然气流为建筑空间提供通风的通风机的最低要求。1.2本标准包括物理、性能和标记要求。它还包括附录，给出了为建筑空间通风而安装通风机的建议，以及确定净通风面积的指南。1.3本标准不适用于机械操作通风机或空气涡轮通风机。1.4参考出版物本标准指的是以下出版物，如果引用，则应指以下列出的版本，包括其所有版本:ASTM 标准B117-73（1979年重新批准），盐雾试验。美国测试与材料学会。

1. Scope1.1 This Standard gives minimum requirements for ventilators designed to provide ventilation of building spaces by means of the natural flow of air.1.2 This Standard includes physical, performance, and marking requirements.It also includes Appendices giving recommendations for installation of ventilators to ventilate building spaces and a guide for determining net ventilating area.1.3 This Standard does not apply to mechanically operated ventilators or air turbine ventilators.1.4Reference Publication This Standard refers to the following Publication and where such reference is made it shall be to the edition listed below, including all revisions published thereto:ASTM Standard B117-73 (Reapproved 1979), Salt Spray (Fog) Testing.American Society for Testing and Materials.