A frame element (10; 10′) for use in an aircraft air-conditioning system is attachable to an aircraft structure (36) and includes at least one strut (12, 14, 16, 18; 12′, 14′, 16′) which is formed at least in sections as a hollow cylinder, wherein an air inlet connection (12a, 14a; 12a′, 14a′) of the at least one section-wise hollow cylindrically formed strut (12, 14, 16, 18; 12′, 14′, 16′) of the frame element (10; 100 is connectable to an air outlet duct of an aircraft air-conditioning unit, and an air outlet connection (12b, 14b; 12b′, 14b′) of the at least one section-wise hollow cylindrically formed strut (12, 14, 16, 18; 12′, 14′, 16′) of the frame element (10; 100 is connectable to an air outlet opening terminating in a cabin region of an aircraft.