The RZ Series zone dampers have been the most commonly used type of zone dampers on the market. These dampers use an actuator that powers the motor in one direction (usually closed) and then spring returns the damper in the opposite direction (usually open).

All of the below dampers have the following features:
Residential Zone Round Damper (RZRD)
  • Two position 24 VAC 10 VA 2-wire power close, spring return open actuator
  • Ability to field change to be powered open, spring closed when required (such as in a fresh air intake application)
  • Nylon bushings for quiet, long lasting operation
  • Constructed of galvanized smooth steel, double beaded for rigidity
  • Offered in round diameters of 4”, 5”, 6”, 7”, 8”, 9”, 10”, 12”, 14”, 16”, 18”, 20”
Residential Zone Quadrangle (Rectangle) Damper (RZQD)
Side Mount
  • Two position 24 VAC 10 VA 2-wire power close, spring return open actuator
  • Default orientation is powered close, spring return open unless ordered as powered open, spring return close
  • Constructed of durable extruded aluminum for both the frame and blades
  • Bronze Oilite bearings for long lasting, quiet operation
  • Available in all standard sizes starting at 6”x6” and increasing in two inch increments with custom sizes available
  • When ordering a side mount rectangular damper: A” x B” dimensions will be Width (always the larger dimension) x Height (always the smaller dimension) and the actuator and mounting plate will always be mounted on the B dimension unless the dimensions are a square in which case there is no need to specify bottom or side mount
Retrofit Round Damper (RFRD)
  • Two-position 24V 1.2 VA 3-wire power open, power close actuator
  • Used for applications where ductwork is not easily accessible
  • Urethane outer blade seal ensures a tight seal
  • Offered in round diameters of 5”, 6”, 7”, 8”, 9”, 10”
Download Fahrenheit Series Brochure
Download Fahrenheit Series Catalog