An air passage, namely a ceiling or wall outlet (1, 101, 201, 301), comprising - a housing (2, 202, 302) that encloses an interior (3, 203, 303) and has o an air connection piece (4, 304) and o an air outlet surface (5, 205, 305) formed by perforations, wherein the perforations are located in a cladding panel, and - multiple air guiding elements (6, 106, 206, 306, 7, 107, 207, 307) arranged in the interior (3, 203, 303), wherein said air guiding elements are, viewed in a flow direction, arranged in front of the air outlet surface (5, 205, 305) and respectively inclined relative to the air outlet surface (5, 205, 305), wherein the air guiding elements (6, 106, 206, 306, 7, 107, 207, 307) are arranged behind one another in the form of a row, wherein at least one air guiding element (6, 106, 206, 306, 7, 107, 207, 307) is inclined relative to the air outlet surface (5, 205, 305) in a first direction and at least one second air guiding element (6, 106, 206, 306, 7, 107, 207, 307) is inclined relative to the air outlet surface (5, 205, 305) in a second direction extending opposite to the first direction such that - in a viewing direction perpendicular to the air outlet surface (5, 205, 305) - an outflow of the air flowing through the air passage (1, 101, 201, 301) takes place in directions that are opposed by 180 degrees +/- 5 degrees, characterized in that the air guiding elements (6, 106, 206, 306, 7, 107, 207, 307) extend directly up to the cladding panel with ends facing the cladding panel and/or contact the cladding panel from a side facing away from the room to be ventilated with ends facing the cladding panel, wherein all air guiding elements (6, 106, 206) that are inclined in the first direction and all air guiding elements (7, 107, 207) that are inclined in the second direction respectively are formed conjointly by a lamellar, saw tooth-shaped component (12, 14), which engage into one another in a comb-like manner, and wherein air guiding elements (6, 106, 206) that are inclined in the first direction engage into gaps between the air guiding elements (7, 107, 207) that are inclined in the second direction. - a housing (2, 202, 302) that encloses an interior (3, 203, 303) and has o an air connection piece (4, 304) and o an air outlet surface (5, 205, 305) formed by perforations, wherein the perforations are located in a cladding panel, and o an air connection piece (4, 304) and o an air outlet surface (5, 205, 305) formed by perforations, wherein the perforations are located in a cladding panel, and - multiple air guiding elements (6, 106, 206, 306, 7, 107, 207, 307) arranged in the interior (3, 203, 303), wherein said air guiding elements are, viewed in a flow direction, arranged in front of the air outlet surface (5, 205, 305) and respectively inclined relative to the air outlet surface (5, 205, 305), wherein the air guiding elements (6, 106, 206, 306, 7, 107, 207, 307) are arranged behind one another in the form of a row, wherein at least one air guiding element (6, 106, 206, 306, 7, 107, 207, 307) is inclined relative to the air outlet surface (5, 205, 305) in a first direction and at least one second air guiding element (6, 106, 206, 306, 7, 107, 207, 307) is inclined relative to the air outlet surface (5, 205, 305) in a second direction extending opposite to the first direction such that - in a viewing direction perpendicular to the air outlet surface (5, 205, 305) - an outflow of the air flowing through the air passage (1, 101, 201, 301) takes place in directions that are opposed by 180 degrees +/- 5 degrees, characterized in that the air guiding elements (6, 106, 206, 306, 7, 107, 207, 307) extend directly up to the cladding panel with ends facing the cladding panel and/or contact the cladding panel from a side facing away from the room to be ventilated with ends facing the cladding panel, wherein all air guiding elements (6, 106, 206) that are inclined in the first direction and all air guiding elements (7, 107, 207) that are inclined in the second direction respectively are formed conjointly by a lamellar, saw tooth-shaped component (12, 14), which engage into one another in a comb-like manner, and wherein air guiding elements (6, 106, 206) that are inclined in the first direction engage into gaps between the air guiding elements (7, 107, 207) that are inclined in the second direction.