MODEL: DG-25 & DR-25                                                                         
Supply air grilles and registers are multi parallel and adjustable blade type with aerofoil section of blades which allow a smooth and uniform air-flow pattern for quiet and low pressure drop application. Adjustable horizontal, or vertical blades can be supplied to control the airflow pattern in either the horizontal or vertical planes. Nylon bushings are used to separate the blades from the frame to eliminate rattling and to provide positive tension when adjusting the blades. Rigid corner fasteners assure a solid construction. Registers are provided with opposed blade dampers with face projected lever for adjustment from the face of register without any special tools.