Replacement with AC5250 Carbon Compatible Filters C & Filter Air GermGuardian HQRP 4-pack AC5350B AC5000E AC5250PT AC5350W (Reserve) AC5300B Purifiers, AP2800CA 2pcs Kit: FLT5000

HQRP® 2-Pack Filter Size C + 4-Pack Carbon Filters; Multiple levels of cleaning including Activated Carbon Filter to help decompose odors from smoking, cooking, pets etc; The filter retains 99.97% of 0.3 microns which pass through the filter; Combination filter needs to be replaced every 6-8 months depending on the use of the product; Easy to install; 2 weeks DOA replacement warranty!