Methodology guide
Limits and when to stop shopping this ladder.
Calculator
Enter volume, drain time, and lift. Get required GPH and a 2,000 / 4,000 / 5,000 GPH class or NO_MATCH.
Worked check: 1,500 gal ÷ 1 h at 20 ft → 1,500 GPH → 2,000 GPH class.
Limits and when to stop shopping this ladder.
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