RCD / RCDA Series

Product Information

View Performance Data RCD

Horizontal / Vertical Air Pattern
3-Position Adjustment (Steel) RCD
3-Position Adjustment (Aluminum) ARCD
Fully Adjustable RCDA

adjustable round cone ceiling diffusers combine the classic beauty of 4 cone styling with maximum air diffusion efficiency. The three center cones move in unison when adjusted and retain their relative position so maximum uniformity of design and minimum pressure loss are assured under all conditions.

Model RCD / ARCD
Adjustment of inner cones accomplished by removing cones and repositioning screws. Three adjustment positions available.

Model RCDA
Air pattern adjustable from full horizontal to full vertical by turning the small center cone.


  • Heavy gauge spun steel (RCD / RCDA) or heavy gauge aluminum (ARCD) construction.
  • Three center cones move in unison to ensure uniform appearance.
  • Easily adjustable without requiring special tools.
  • Excellent performance for VAV ¬≠applications.
  • Optional wire guards available to protect diffuser face for gymnasium applications.
  • Complete range of available accessory dampers, equalizing grids, etc.

Model RCD

Product Selection Checklist

  1. Select Unit Size based on specified inlet diameter.
  2. Select Outlet type by model number.
  3. Select Volume Control and/or Mounting accessory, if desired.
  4. Select Wire Guard / Safety Chain accessories, if desired.
  5. Select Finish.

Example: 24" / RCDA / B12



White Powder Coat



For optional and special finishes
see color matrix.

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