Abstract: In a method of mounting cooling air fans (2) in an electronic equipment unit (3) having a unit front (4) a unit rear (5) and unit sides (6, 7) and wherein the cooling air fan/fans produce cooling air flow (AF) directed from the unit front to the unit rear, cooling air fans are attached to a flexible cooling air fan carrier (8) that is introduced through a slot (3A) in the unit front and is advanced along a non-linear path (9). The cooling air fan carrier is advanced along a first, generally straight path section (9A) from the unit front and approximately to the unit rear, further through a second, bent path section (9B) and through a third, generally straight path section (9C) extending along the unit rear, thereby positioning the cooling air fans along the unit rear.