Methodology guide
Limits, jack-stand disclaimer, and when to stop shopping this ladder.
Calculator
Bottle jack capacity calculator
Enter GVWR in pounds. Get minimum jack rating (GVWR × 0.75) and a 6 / 12 / 20 ton class or NO_MATCH. Always pair with jack stands.
Result
Required ≈ GVWR × 0.75. Worked check: 8,000 × 0.75 = 6,000 → 6 ton class. Confirm lift points and min/max height.
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