Festool 578948 Activated Charcoal Preliminary Filter SYS-AIRWhether in the workshop or when renovating: the activated charcoal filter ensures fresh air. Activated carbon acts like an invisible protective shield: it captures volatile organic compounds (VOCs) and physically retains them. It also reliably binds unpleasant odours such as paint vapors, mold or solvents ideal for professional work and a better indoor climate. Enormous filter performance: one teaspoon of activated carbon provides a surface area the