Fan Filter Media (80mm, 30PPI) is essential for maintaining the efficiency of cooling systems by preventing dust accumulation on fan blades. Constructed from durable polyurethane foam, this filter media offers a balance between airflow and filtration, ensuring optimal performance. Its 30 pores per inch (PPI) design effectively captures airborne particles, making it suitable for variou... https://gardteconline.com/products/80mm-fan-filter-media-30ppi-sc80-m30-5