本标准规定了高架门挡和门座的要求，并包括涵盖操作、周期、强度和光洁度标准的性能试验。本标准中描述的试验在实验室条件下进行。在实际使用中，结果因安装、维护和环境条件而异。此商品作为折扣标准集的一部分提供，涵盖车门控制。

This Standard establishes requirements for overhead door stops and holders, and includes performance tests covering operational, cyclical, strength and finish criteria. Tests described in this Standard are performed under laboratory conditions. In actual usage, results vary because of installation, maintenance and environmental conditions.This item is available as part of a discounted standards set coveringDoor Controls.