True HEPA Replacement For GermGuardian filter C (FLT5250 / FLT5250PT) For AC5000 Series Air Purifiers (1) True HEPA filter provides best filtration available, capturing up to 99.97% of particles down to 0.3 microns in size Attached pre-filter to capture larger particles and reduce odors Fits models: AC5250PT, AC5000E, AC5300B, AC5350W, AC5350B, PureGuardian AP2800CA, Black+Decker BXAP250 & Lowe's IAP-GG-125 Original 1 piece filter size with attached pre-filter