Manual Revolving Door

Manual revolving door typically consists of three or four doors that hang on a central shaft and rotate around a vertical axis within a cylindrical enclosure. Revolving doors are energy efficient as they prevent drafts (via acting as an airlock), thus preventing increases in the heating or cooling required for the building.
At the same time, revolving doors allow large numbers of people to pass in and out.
The wings of revolving doors usually incorporate glass, to allow people to see and anticipate each other while passing through the door. Manual revolving doors rotate with push-bars, causing all wings to rotate. Revolving doors typically have a "speed control" to prevent people from spinning the doors too fast.

Manual revolving door catalog

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