Abstract: Improved air flow characteristics are obtained in a ventilating hood of the make-up type used over cooking surfaces by providing an air distribution panel comprising a panel frame to which is mounted a duct which serves to partition air flow between a first path exterior to the duct and a second path through said duct. A first air flow restricting screen is mounted to the panel frame externally of said duct for restricting air flow through the first flow path, and a second air flow restricting screen is mounted within said duct for restricting the air flow therethrough. The duct includes an internal wall surface which is angled towards the first flow path so as to direct air flow through the duct into merger with air flowing through the first flow path.