Air control door with integrated stratification feature

An air control door mounted within a motor vehicle ventilation unit comprising:

• a main body that rotates on an axis and blocks a predetermined amount of air from flowing through the ventilation unit depending on its angle of rotation;
• and
• a mixing section defined by a plurality of air guides and at least one air passage, wherein the mixing section permits a predetermined amount of a first air stream to mix with a second air stream depending on the angle of rotation of the main body.

A rotatable air control door for use within the housing of a ventilation unit and located at an intersection between two different temperature air streams, said air control door comprising:

• a first surface that, when rotated into a first position, blocks substantially all of the air from a first air stream from traveling through the housing while simultaneously permitting substantially all of the air from a second air stream to travel through the housing;
• and
• a second surface integrally attached to the first surface and located such that, when the first surface is rotated into the first position, the second surface does not contact air from the first air stream, and, when the first surface is rotated to a second position, the second surface is in fluid communication with both air streams and blocks a predetermined amount of the first air stream from traveling through the housing.