Camfil APC introduced HemiPleat replacement filter cartridges to fit all oval industrial dust collectors. Synthetic beads hold the pleats open to expose more media to the airstream, increasing filter efficiency, lowering pressure drop and facilitating a better release of dust during pulse cleaning. Replacing filter cartridges with HemiPleat oval filters reduces a dust collector’s operating costs because the system uses less compressed air and energy for the fan motor. The filters are available with efficiency up to MERV 16. They come in a variety of filter media including nanofiber, flame retardant, synthetic, carbon and PTFE.