A vent with an adjustable baffle is disclosed. As the baffle is rotated away from the frame of the vent a corresponding opening is formed though which air may flow. The vent further has features which constrict the width of the opening in response to how far the baffle is opened. When the baffle is partially opened, these constricting features block a portion of the vent opening resulting in an opening of a certain width. The baffle can be opened further to a point beyond the constricting feature so that a wider vent opening is created. The design allows for more, and easier control of air flow in a system and can increase the distance air coming though the vent moves into the space before it descends.
