Includes one filter for daily replacement, suitable as a temporary replacement for household vacuum cleaners or for routine singlefilter changes. Compatible with common household models: filter size and installation position match typical vacuum designs; no debugging required; once installed, the vacuum operates normally and filtration remains stable. Intercepts impurities to protect cleanliness: blocks dust, food debris, and pet hair; prevents dirt from flowing back with the airflow; ensures clean exhaust air and reduces indoor air impurities. Tool disassembly and assembly: no tools needed; handsonly access to the filter compartment; quickly remove the old filter and install the one; completion in about 30 seconds; suitable for elderly users and beginners. Use scenarios: Petowning households dealing with fur and dander during daily cleaning. Quick replacement during multiroom cleaning when a spare is needed. Homes with kids or dusty environments requiring reliable filtration. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.