This is the genuine CleanMax Pro-Series HEPA Media Filter. Replaces CleanMax part #CMPS-HEPA. It may also be listed as CMP-HEPA. Also replaces Fuller Brush FBMM-HEPA, FBHD1, FBHD1T, FBP-14PWBP, FBP-14PW, FBP-HD2 and FBP-HD2T. Comes as a (4) Pack.