Drive Side

Control Dampers

• It is important to consider drive side when ordering single-section dampers, particularly when parallel blades are required.
• Drive side will affect the direction the blades rotate to open and thereby affect the angle of airflow when parallel blades are not in the fully open position.
• Drive side will not affect the angle of airflow for opposed blade dampers.
• Single-section wide dampers can be ordered with drive rods on both sides.
• Multiple-section wide dampers are always manufactured so that the leftmost section is left hand drive and the remaining sections are right hand drive.
• If a damper requires a jackshaft that must extend beyond both sides of the damper section or assembly, this must be specified at the time of order.