*Download the spec sheet above for the Standard Construction information
(ROBN) Opposed Blade Non-sealed
The ROBN is our round opposed blade non-sealed damper designed to fit inside pipe sizes ranging from 16″ to 48″ round. The welded 2″ deep frame is undersized 1/4″ for ease of installation, the damper blades are a formed 16ga galvanized steel with linkage in the airstream for better blade operation.
This damper has a 1/2″ round control rod that can be operated by either a hand quadrant with standoff or an actuator.