Honeywell Replacement Wicking Filter T, For use with Honeywell HEV615 and HEV620 - Captures minerals from water and helps prevent white dust - Protec Antimicrobial Treated Filter helps prevent the growth & migration of mold, algae & bacteria on the filter - Inhibits up to 99.99% of mold growth (on the filter) - Blue pre-filter layer helps capture large particles. Optimized design maximizes moisture output.