Nilfisk Meteor bagless vacuum cleaner vacuum cleaner H12 filter goes in the bagless dust container with the foam pre-filter in front of it. The part you are buying is the white pleated filter part on the left. The Pre-Filter is on the right.
When emptying the dust chamber, make sure you don't loose the plastic cyclonic insert
According to EN 60335-2-69 The Terms "TYPE H" FILTRATION and HEPA FILTRATION are NOT INTERCHANGEABLE
The HEPA classification only considers the "efficiency of filtration" eg H10 H11 H12 H13 H14 U15 U17 NOT the SUITABILITY FOR USE with HAZARDOUS or COMBUSTIBLE dusts
As it's light, maximise the saving on postage and buy a couple of pre-filters that protect the cartridge filter and the whole set of filters! See in related parts below.
At the moment, standard postage within Australia is capped at a maximum of $20!