The RIDGID OSHA compatible kit with HEPA-media filter and cyclonic pre-separator dust bags includes 1 RIDGID VF6000 5-layer allergen filter and 2 RIDGID VF3602 premium cyclonic dust bags. When installed together (in select RIDGID vacs listed below), this kit is OSHA Silica Table 1 Compatible for certain dry dust collector control methods and HEPA-filtered vacuum control methods (1926.1153) within the limitations of their airflow performance. Included dust bags allow for cyclonic airflow, resulting in pre-separation and more equal distribution of fine particles and debris throughout the bag. Dust bag disposal is clean and easy with sealing collar feature. Included VF6000 filter is made from HEPA media. Compatible vacs listed below.