Composite Sponge AC Vent Filter

Size: 5.2 cm × 21 cm (2.05 × 8.27 inches); material: engineered composite sponge with integrated silver ion functionality and thermal stability; filtration rating: 98% removal of PM2.5-sized particles; installation method: friction-fit snap-on design requiring no tools or adhesives; service life: approximately 6 months under average residential use. Each filter pad is precision-cut for consistent coverage of standard air vent openings. The sponge’s open-cell structure balances high particulate retention with minimal resistance to conditioned airflow — preserving cooling output and energy efficiency. Silver ion dispersion is evenly distributed throughout the matrix, ensuring continuous surface-level antimicrobial activity across the full usable lifespan. Suited for multi-environment deployment: equally effective in temperature-controlled offices, child-friendly living areas, and compact urban flats where space and air quality are tightly interlinked. Works silently and invisibly behind existing vent grilles — no visible hardware or aesthetic disruption.