CleanSpace CST particulate filters TM3 P3 are suitable for protection against airborne particulates (dust, mists, fumes) with a particulate filtration efficiency ≥ 99.95%; CleanSpace CST1004 filters are high capacity filters and compatible with the CleanSpace PRO power unit (CST1002) and CleanSpace ULTRA power unit (CST1012); CleanSpace CST filters are enabled to collect filter usage data which can be accessed by the CleanSpace Smart App; important: when selecting a CleanSpace filter please consult a health and safety specialist for advice on the appropriate respiratory equipment and filter use; this filter is recommended for high dust concentrations; sold in a pack of 3 filters