Includes Two (2) 3‑in‑1 filtration systems: Each filter combines a Pre‑Filter, Activated Carbon Filter, and H13‑grade Main Filter for full‑spectrum air cleaning. Why you need it Reduces visible and invisible contaminants: the Pre‑Filter catches hair, dust, lint and larger debris so the main filter lasts longer. The H13 Main Filter captures 99.97% of airborne particles down to 0.3 microns. The Activated Carbon layer removes common household odors and many harmful VOCs. Improves indoor comfort and health: fewer irritants and odors make homes with pets, cooking, or occasional smoke more comfortable for allergy sufferers and sensitive occupants. Two filters per pack: provides a spare for a second room or an immediate replacement plus a backup, ensuring continuous protection without downtime. Key features and performance 3‑in‑1 design: single, compact assembly that combines mechanical capture (Pre‑Filter + H13) with chemical adsorption (Activated Carbon). H13 Grade Main Filter: ‑efficiency capture of 99.97% of particles ≥0.3 microns. Activated Carbon Filter: targets household odors from pets, cooking, and smoking, and helps reduce harmful VOCs. Pre‑Filter: traps larger particles (dust, pet fur, lint) to preserve main filter performance. Practical use scenarios Living room with pets: removes fur and pet dander while reducing odors from litter boxes or pet beds. Kitchen and dining areas: captures cooking smoke and grease particulates and reduces lingering food odors. Bedroom or home office: lowers allergen load and improves air clarity for better sleep and concentration. Compatibility and installation Supplied as complete 3‑in‑1 filter assemblies intended for air purifiers that use a combined Pre‑Filter + Activated Carbon + H13 Main Filter configuration. Check your purifier's filter type before . Notes Contains two identical 3‑in‑1 filters. Follow your air purifier manufacturer's guidance for installation and replacement intervals to maintain performance.