The functional use of duality in kitchen design,

this time in the position of changing the volume of function (minimum and maximum function),  which in the not-so-distant past were two separate envelopes of space (one closed space and the other open space) but adjacent area , in the kitchens as a dirty and clean kitchens it worked , which is generally in the service of a luxurious look (of the market type) rather than a functional one .

In the past, different programs along the interior  promenade  have been formed from of different special envelopes and there is clean border between beginning and the end of theses spaces.

These two spaces could not have a coordinated and simultaneous function in communication with each other when necessary, due to the weak communication port.