Parallel-walled ventilation duct assembly with integrated low-profile subducts

A ventilation duct assembly with integrated low-profile subducts, the ventilation duct assembly comprising:

• a main shaft body including at least one wall defining an interior cavity of the main shaft body, the interior cavity of the main shaft body extending from a proximal end to a distal end of the main shaft body along a longitudinal axis, wherein at least a portion of the at least one wall is disposed along two parallel axes perpendicular to the longitudinal axis, wherein a cross-sectional area of the main shaft body has an obround shape defined by two parallel sides and two round endpoints;
• and
• at least one low-profile subduct disposed within the interior cavity of the main shaft body between the proximal end and the distal end of the main shaft body,
• wherein the at least one low-profile subduct includes an interior channel defined by a plurality of walls of the at least one low-profile subduct and an intake channel coupled to the interior channel, wherein the interior channel and the intake channel form an exhaust channel configured to route exhaust from an exhaust source into the interior cavity of the main shaft body,
• wherein the at least one low-profile subduct is integrated into the at least one wall of the main shaft body such that at least one wall of the plurality of walls of the at least one low-profile subduct includes at least a portion of an interior surface of the at least one wall of the main shaft body, and
• wherein the at least a portion of the interior surface of the at least one wall of the main shaft body includes a flat portion of the interior surface.