Revision history of "File:Roof-fan.jpg"

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  • curprev 12:52, 13 April 2019Yar talk contribs 214 bytes +214 I climbed to the ceiling in Sudoroom for this. It's the compressor for the fan which intakes from all over the building and outlets on the roof. David Keenan wanted to know if it's "explosive" or not.