NilfiskCFM and 3 phase industrial vacuum cleaner Class H14 Absolute filtration, panel filter kit. ONE ONLY AT THIS PRICE!
It is found in a painted box above the motor enclosure on the opposite end of the machine to the hose, such as in the old photo with the lathe, apparently, in this application, the lathe is cutting Graphite.
The filter inside is SKU
At the moment standard postage within Australia, is capped at a maximum of $25, so maximise the saving on postage and buy something in related items below!