Uppatvind standoffs for Starkvind carbon filter

Fits a modified Starkvind carbon filter between Uppatvind air purifier and its HEPA filter.

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First, you need to modify a Starkvind carbon filter:

https://www.ikea.com/be/nl/p/starkvind-koolstoffilter-80488129/

For this: simply cut the filter to size, take the borders off the cutoffs and glue them to the newly cut filter.
Fit the new filter in the machine, then the HEPA one. put the standoffs and the grid.

Done. Super simple.