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The CD60 offers sturdy, steel construction with an interlocking frame design, enabling it to lock together without bolts, screws, or rivets that could shake loose. It also features:


  • Frame corners that are internally braced to reduce racking.
  • Axles that positively lock to blades without screws or welds.
  • Non-stick, noncorrosive bearings that assure long life and ease of operation.
  • Airfoil blades, which have greater strength, produce less sound, greater sealing ability, and static pressure loss.
  • Concealed linkage to reduce turbulance, which provides lower pressure drop and reduces noise.