HO91 Timing Belt Carlisle

Decoding designations on Carlisle belts HO91 63FV2305:
\n
\nImperial designations:
\nSeries number: HO91
\n
\nHO - profile designation
\n91 - working length (Lp) in inches
\nMetric designations:
\nSeries number: 63FV2305
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\n63FV - profile designation (TW=63mm Th=30mm)
\n2305 - working length (Lp) in millimeters