Nova Flair Replacement filter (Mini)
Nova Flair Replacement Activated Carbon Filter will give you maximum airflow with filtration down to 1 micron. Fits all MINI models. This filter is rated to take out 99% or better of the dust. How big is a micron? One micron 1/1000 mm (1/25,000 of an inch). Airborne particles are usually described in microns. Generally speaking, the human eye can see debris and dust that are approximately 25 microns in size.