7 used air purifiers LRA-S (manufacturer LK Metallwaren GmbH) are offered. CE marking is present. Since the devices (location: Gregor-Mendel Gymnasium Amberg) have not been in operation for some time, they are not currently maintained. Therefore, minor maintenance including filter replacement should be performed before commissioning. Condition: The devices function perfectly. They show the usual age-related wear and signs of use...