A purifier is a working object, so maintenance matters. The best printed enclosure is not the one that hides everything forever; it is the one that keeps the fan, filter and airflow path understandable after the build is done.
Filter access matters because filters get dirty. If the filter is difficult to reach, the purifier becomes decorative instead of useful. A good design page should make the maintenance idea obvious before someone downloads the files.
Fan access matters for the same reason. PC fans are practical, available and replaceable, but only if the design lets the maker reach them. A fan-and-filter object should not become a sealed mystery box.
Airflow matters because a beautiful shell cannot compensate for a blocked path. The body needs to guide air through the filter instead of around it, while still letting the object look good on a desk or shelf.
A clean enclosure can still behave like a serviceable object: visible intake, reachable filter, accessible fan and no hidden air path around the filter.
Haze
A purifier design with a softer, atmospheric name and a calm visual presence. Haze is for rooms where the printed filter object should quietly do its job while still making the airflow path understandable.
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