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Residential Jackshaft Opener: Recommended track radius

The radius is the length of track it takes to turn the door from horizontal to vertical. 12" and 15" inch radius tracks are the most common.

The LiftMaster Residential Jackshaft Opener (RJO) Model 3800 and 8500 works on the following tracks:

  • 12 inch (except with 3 panel doors, which is not recommended for use with 12 inch radius tracks)
  • 15 inch
  • 24 inch
  • 32 inch

For more installation requirements, see Installation requirements for the Residential Jackshaft Openers.

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Residential Jackshaft Opener: Recommended track radius