PUBLISHED
ISO 12759-4:2019
PROJECT
ISO 12759-4:2019/FDAmd 1
50.20
Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Oct 12, 2026
Fans - Efficiency classification for fans - Part 4: Driven fans at maximum operating speed - Amendment 1 (ISO 12759-4:2019/FDAmd1:2026)
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
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