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  • Modification only
  • For installations that exceed 100 door cycles per day
  • Includes cast iron flanged precision bearings on all shaft and delay on reverse circuit
  • Supplied with #41 chain .......more details
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  • Provides an auxiliary trolley assembly where otherwise a jackshaft operator may be preferred
  • NOTE: Operator must be supplied with reverse limits
  • If purchasing for field install the limits on the operator would need to be reversed
QTY 1+