1/4" wire glass and ceramic glass are the most common types of glazing used in fire rateddoors. The hourly rating of the door dictates the number and maximum size of the vision lights used in the door. Table 2 shows the limitations of size, area and number of vision lights in a door. Vision lights are not allowed in 3-hour rated fire doors, unless allowed by the local authority having jurisdiction. The vision
Лекият комплект или рамката на прозореца трябва да бъде одобрен за използване в врата с оценка на пожар.
