Mechanical · M-3KR93

Return Transfer Air Duct Detail

Elements

Walls Partitions Ceilings Floors / Slabs

About this detail

Rigid transfer air ducts are detailed with a minimum 1-inch interior liner, ceiling grilles, and structural supports on each side of interior partitions and walls. Layouts include a ceiling return grille boot, an L-shaped air duct plan view, a ceiling-to-ceiling section, and a U-shaped air duct section. Sight-line offsets and minimum dimensional clearances such as six inches and 1.5D are maintained to prevent sound transmission and light passage. Duct depth is sized per floor plans to limit air velocity to 500 feet per minute with a minimum size of 0.5D.

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