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  Model ECO - Spiral Duct Supply Grille & Registers  
  • Grille / Register installs directly into round duct without the use of saddle transitions
  • Premium appearance enhances exposed duct installations
  • Recommended for heating, cooling, and ventilating supply applications
  • Versatile directional, throw distance, and spread pattern control
Product Features
  • Grille border designed to follow the arc of round duct surface
  • Single or double deflection supply models
    with horizontal or vertical front blades
  • Front horizontal blades (up to 48" wide) designed to follow duct radius – an industry first!
  • Steel or aluminum construction
  • 3/4" spacing of individually adjustable blades
  • Blades rotate smoothly without bending and are tensioned by music wire
  • Front blades selected as horizontal or vertical for visual effect
  • Registers include a factory attached, diverter/damper to assist in balancing
  • Mounting holes in frame neatly countersunk for supplied #8 x 1-1/2" oval head screws
  • White frame gasket
  • Arctic White baked-on finish
  • Diverter-damper (factory installed)
  • Gray frame gaskets
  • Optional Anemostat colors or custom color matching


Model Type  
ECO10 Single Deflection Supply
ECO20 Double Deflection Supply
ECOP Perforated Return