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EWC 18X20 ND-RSD NO Motorized Damper Normally Open

  • $229.20

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Availability: In Stock

Brand: EWC Controls

Product Code: 18X20 ND-RSD NO


Product views: 183

  • Motorized Damper 
  • Normally Open 

Model ND-RSD is a rectangular parallel blade damper constructed from heavy duty extruded aluminum with nylon bearings for quiet operation. The Motor Actuator is a 24vac ( Synchronous motor. It is typically a Power Close / Spring Open construction. The damper can be ordered as Power Open / Spring Close. The Model ND-RSD cannot be field-reversed. The motor can get very warm when energized/stalled for extended time periods. To avoid overheating, do not insulate or encapsulate the motor housing. Doing so will damage the actuator assembly and void the warranty. 
  • Heavy Duty Frame
  • Nylon Bushings for Quieter Operation
  • Revolutionary Motor with greater Reliability
  • LED’s to Show Damper Operation
  • Low Leakage
  • Simple 2-wire Hook-up
  • Easier Ordering
  • Motor is always mounted on second dimension specified


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