The Revolving doors consist mainly of a centrally located mullion or pivot in a circular opening. The revolving shutters or leaves which are four or three in number are radially attached to the pivot.
The radiating shutters can be completely glazed, fully panelled or partially panelled. The shutters are enclosed in a vestibule. The rubbing ends or edges of the shutters are provided with rubber weathering strippings, which prevent a draught of air.
Simultaneously these doors provide access to the entrance on one side and the exit on the other, and automatically, keeping the door closed when not in use.
The revolving doors are used in big hotels, banks, office buildings, and other such places where a continuous flow of pedestrian traffic is persistent.