请注意:此版本的所有临时修订版将在您购买时提供。防盗玻璃材料L 9721范围1。1这些要求包括用于室内和室外的透明、半透明或不透明玻璃材料，主要用作平板玻璃展示窗或展示箱面板的替代品。1.2该材料旨在抵抗“肇事逃逸”类型的盗窃袭击。1.3这些要求不包括用于安装防盗玻璃材料的玻璃（安装）方法。

Please note: All interim revisions for this edition available at time of your purchase will be included.Burglary Resisting Glazing MaterialUL 9721 Scope1.1 These requirements cover clear, translucent, or opaque glazing material intended for indoor and outdoor use principally as a substitute for plate glass show windows or show case panels.1.2 The material is intended to resist burglarious attacks of the "hit and run" type.1.3 These requirements do not cover the glazing (mounting) methods used for the installation of burglary resisting glazing material.