Calculator

Filter cap diameter calculator

Enter cap OD in mm. Get 7, 14, or 30-piece class or NO_MATCH (including 39–64 mm gap).

Result

Enter values to begin.

Worked check: 32 → 7; 76 → 14; 105 → 30; 50 → NO_MATCH; 120 → NO_MATCH.

Guides

Envelopes, gap, and safety notes.