HEPA 2 True Air Filters + 6 Carbon Pre Filter for Air Purifiers FLT5250 FLT5250PT Filter C for AC5000 Series Replacement HEPA + Carbon Pre Filter Fit Guardian 5000 5111 5250Compatibility Compatible with Guardian Air Purifier Models AC5000E, AC5000, AC5250PT, AC5300B, AC5350BCA, AC5350W, AC5350B, CDAP5500, PureGuardian AP2800CA, Black+Decker BXAP250 & Lowe's Idylis IAP GG 125. FunctionsTrue HEPA Filter captures 99. 97% of dust as small as 3 microns. Charcoal filter reduces common odors from pets, smoking and cooking. Dimensions True HEPA Filter: 19. 75'x4. 75x 1. 75. Pre Filter: 19. 75x4. 75x 0. 16 For Optimal Performance