noun
air supply port; vent
Technical term used in building ventilation and HVAC contexts; refers to an opening that lets fresh air into a room or system.
各部屋の壁に給気口が設置されている。
An air supply port is installed in the wall of each room.
給気口のフィルターを定期的に掃除してください。
Please clean the air supply vent filter regularly.