JBL SR47-X User Manual page 15

Each primary "load bearing"suspension point shall be rated for the entire load.
(MIN: 5:1 Design Factor or Local Standard, Whichever Is Greater)
Appropriate
Track Fitting
(User supplied, overhead
suspension rated and certified)
Working load limits: No more than four (4) high (vertical)
The four (4) high vertical specification represents a static ratio of 7:1.
Example
Primary "Load Bearing"
Facility Attachment Points
Secondary
Suspension Point
Appropriate Track Fitting
(EG: AF-DSF)
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