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German to English translations [PRO] Tech/Engineering - Construction / Civil Engineering / heating systems
German term or phrase:FOK
I'm afraid I can't give much context. This crops up in the technical specifications for a heating system, under the heading of Wärmedämmung:
UG bis 2,0 FOK Alu-Blechmantel
UG über 2,0 FOK Alu-Pack
Schächte, Zwischendecke aufkaschierte Alufolie