Manufacturer: Yosper [Model Numbers] Dust Collection Filter FZ-D50HF (FZ-M501HF) / Deodorizing Filter FZ-D50DF (FZ-F50DF / FZ-M501DF). Materials: Polyester, Polypropylene, Activated Carbon. [Compatible Models] KC-50TH1, KC-50TH2, KC-D50, KC-E50, KC-F50, KC-F50-C, KC-F50E3-C, KC-G50, KC-G50-H, KC-H50, KC-H500Y, KC-J50, KC-J500Y, KC-J50C, KC-L50, KC-L500Y, KC-M503J, KC-M50B, KC-M511, KC-M51BH, KC-N50, KC-N500Y, KC-P50, KC-P500Y, KC-R50, KC-S50, KI-GS50, KI-HS50, KI-JS50, KI-LS50, KI-NS50, KI-PS50, KI-RS50, KI-SS50; [HEPA Dust Collection Filter] Captures PM2.5, pollen, allergens (dust mite feces/dead bodies), mold spores, dust/dirt, tobacco smoke (particles), pet hair, etc. It may discolor (gray, ocher, etc.) due to collecting fine dust and dirt in the room, but this is not abnormal. [Deodorizing Filter] In addition to powerful odor decomposition and deodorization, the deodorizing filter reduces harmful components contained in exhaust gases that enter living rooms, etc. It can eliminate cooking odors, pet odors, the smell of damp laundry, body odor, and aging odors. [Replacement目安 (Guide)] Dust collection filters and deodorizing filters should be replaced approximately once every 10 years. The replacement time varies depending on usage time and installation location. This product is a consumable item. If the filter appears noticeably dirty and its effectiveness has decreased, it is recommended to replace it promptly.