Abstract: An airflow grille of a heating, ventilation and air conditioning (HVAC) system includes a grille housing and a grille plate assembled to the grille housing. The grille housing and the grille plate define a grille plenum therebetween. An airflow inlet in defined in the grille housing and a plurality of airflow outlets are defined in the grille plate. A plurality of vane arrangements are arrayed on the grille plate. Each vane arrangement located between adjacent airflow outlets of the grille plate. Each vane arrangement is configured such that at each vane arrangement a first portion of a conditioned airflow flowing through the airflow grille is directed between the grille housing and the vane arrangement and a second portion of the conditioned airflow exits the airflow grille through a corresponding airflow outlet of the plurality of airflow outlets.