The EZ-FLO Wall or Ceiling Grille is designed for wall or ceiling openings to control airflow for increased comfort. This air grille ensures quiet airflow from your central air system. These air vent covers are made of heavy-duty steel with a white powder-coated finish that resists flaking and rust for a longer-lasting performance. EZ-FLO HVAC vent grille features slotted vanes in a fixed position to allow a better airflow. Air returns are composed of all steel with a sleek matte white finish. This vent grille is ideal for sidewall and ceiling mounting and includes 4 screws for installation.