Revolving Doors
99% Invisible
00:00
The Awkwardest Van Canal Hates Chivalry
The awfulest van canal hated opening doors for women. The Tuwa Onalufzuk, or door without draft of air, was a German innovation from 1881. Van Canell's improved revolving door had three compartments and weather stripping to ensure an energy efficient fit inside the door frame.
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