How parallel-clamp sizing works
Class ladder, throat depth, and when to go larger.
Parallel-jaw opening screen
Parallel clamp size by opening
Enter needed jaw opening in inches. Get the smallest 24 / 30 / 36 in parallel-clamp class — or NO_MATCH. Confirm throat depth and load rating before you buy.
Parallel-jaw opening screen
Result
Match the smallest class whose jaw opening covers your need. Classes: 24 · 30 · 36 in. Above 36 → NO_MATCH. Distinct from F-clamp charts.
From measurement to decision
Open the full calculator
Same tool with room for examples.
24 vs 30 vs 36 in
When each class fits — and when none do.
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