An air duct system includes a first member that includes a groove disposed around only a portion of an opening. A second member defines a passage extending along a longitudinal axis, and is in fluid communication with the opening of the first member. The second member includes a flange disposed within the groove of the first member. The engagement between the flange and the groove restricts relative movement between the first member and the second member in an axial direction along the longitudinal axis. An attachment system connects the first member and the second member together, and restricts relative movement between the first member and the second member in a lateral direction that is transverse to the longitudinal axis, to secure the flange within the groove.