主要应用于：
1宾馆、办公楼、商场、试验室、医院、展览馆、工厂等建筑的中央空调系统的中央空调主机旁边应
设置检修口，以利于维修排除管道线路之故障；
2酒店、商场等公共场所锁采用的封闭式天花板上每隔一定距离应设置检修口，以利于对天花板内部
进行维修作业：
3也可应用在灯具口、通风口、消防管道等处。
Mainly used in：
1 The overhaul hole shall be set besides the
host of central air conditioning system for hotels，office buildings，shopping
malls，lahoratoties，hospitals，exhibition halls，factories
and other
buildings，so as to facilitate the maintenance and removal of pipeline
fault；
2 For hotels，shopping malls and other public places，the overhaul hole
shall be set with a celtain distance intetwals in the enclosed ceiling，in order
to facilitate the maintenance
work inside the ceiling；
3 It can also be
used in lamps port,vents，fireproof piping，etc.
铝合金百叶窗风口安装案例
