Sanyo Denki Fan Suffixes

Sanyo Denki Fan Suffixes:
https://www.sanyodenki.com/archive/document/product/cooling/Numbering_system_E.pdf

As an example, “1” Suffix on Sanyo Denki fan 9GA0612P1J031 is calling out “Plastic Ribless Frame”.
Products below with and without the 1 suffix:
Click here for 9GA0612P1J03 | 9GA0612P1J031