No family-rule extension is asserted beyond the cited source list.
Hitachi · exact-code ledger
RM-FJ20 / RM-FJ21 / RM-FJ22 integrated replacement unit
Original manufacturer records and reference-specific models or named families captured in the 27 October 2026 documentary inventory. Source locales and individual fit limits are retained; this is not a complete global model list or fit approval.
Exact model list
3 model codes retained.
3 rows shown.
HitachiRM-FJ20
K-FJ3Manufacturer research relation
HitachiRM-FJ21
K-FJ3Manufacturer research relation
HitachiRM-FJ22
K-FJ3Manufacturer research relation
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Manufacturer evidence
Sources used for this system.
- Hitachi K-FJ3 — manufacturer replacement document; separate exact referenceOpen manufacturer source