Robertshaw® DAOP0820E2 Control Damper, 8 x 20 in, 24 VAC, Aluminum

Robertshaw® DAOP Series two-wire rectangular control dampers are designed to be used in zone control system applications and for the control of air flow in any duct system. Dampers are designed to work with pressure systems up to 1.2 in-WC. All DAOP damper frames are constructed of heavy gauge extruded aluminum with galvanized steel mounting plate. Extruded aluminum blades are attached to a 0.5 in Dia octagonal aluminum shaft which are supported by nylon bushings for smooth operation. DAOP dampers are powered by a single stall type motor providing 50 to 75 in-oz of torque. Minimum blade adjustment is provided by an external locking mechanism. Dampers are spring open/power close and contain a "Lost Motion" breaking system that prevents backlash and shock to the motor gears, bearings and blade shafts when the damper is driven open by the spring return.

Robertshaw® Control Damper, 8 x 20 in, 24 VAC, Opposed Blade, Aluminum, Rectangular Shape, 70 in-oz Torque, 2-Wire Control, Single Stall Motor

• Heavy-duty extruded aluminum frame
• Nylon bushings for smooth operation
• Adjustable minimum position
• Two-wire stall type 24 VAC motor
• Direct coupled actuator
• Motor cover with wiring strain relief insert