Being John Malkovich is based on Craig Schwartz (John Cusack), an unemployed puppeteer, discovering a portal in his office at LesterCorp which transports the person in it into the mind of John Malkovich.
Among the numerous oddities of the floor 7(1/2) in the LesterCorp building, one of the most interesting is the low ceilings. The movie does somewhat explain the reason for the unique structure, however, I don't understand how it holds any significance in the movie.
What does this unique 'structure' signify?