Package includes: 2 HEPA flt5000 filter c and 8 Activated Carbon Pre-Filters An ideal HEPA air purifier filters replacement professionally designed for your Guardian Air Purifier Models AC5000 series, FLT5000 FLT5111 FLT5250PT AC5000 AC5000E AC5300B AC5250PT AC5350B AC5350BCA AC5350W CDAP5500B, PureGuardian Model AP2800CA, PureGuardian Model AP2800CA, Black+Decker BXAP250 and Lowe's Idylis Model IAP-GG-125 Tips: We suggest changing the HEPA filter after 8-12 months and the activated carbon pre-filter every 2-3 months or as needed. This is not a Germguardian OEM product. Any use of the brand names or model designation for this product is made solely for purposes of demonstrating compatibility.