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- Jacks Marine 600lbs, 800lbs & 1K
Jacks Marine 600lbs, 800lbs & 1K
The weight capacity of a trailer jack is determined by the tongue weight of the trailer. The rule of thumb is about 10% +/- (no more than 15%) of the fully loaded trailer weight. A 7,500lbs. trailer would require a 750lbs. tongue jack.