This is the H13 HEPA filter for the Nilfisk GD1000 Series of commercial vacuum cleaner. It fits under the handle cover.
The GD1000 Series, comprises of the Nilfisk GD1005 in grey, The Nilfisk Business 10 litre commercial vacuum cleaner and the Nilfisk GD1010 in Grey and The Nilfisk Family 5 litre barrel vacuum cleaner
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 and U17 NOT the SUITABILITY FOR USE with HAZARDOUS or COMBUSTIBLE dusts.
These vacuums are very popular in the Aged Care sector and for use in hospitals. OH and S personnel like to keep records of when they were changed and replace them each two year period.