Replacement part for Bullard Clean Air Boxes (CAB) provide 3-stage filtration For use with 15 or 30 CFM air flow CAB Three stages of filtration remove oil, water, particulate, oil vapor and odors CAB30FEA Stage 1 Element for 15 or 30 cfm CAB30FEB Stage 2 Element for 15 or 30 cfm CAB30FEC Stage 3 Element for 15 or 30 cfm CAB30FK Element kit, includes Stages 1-3 for 15 or 30 cfm