Fan Filter Assembly (120mm, 100PPI) is engineered to provide exceptional dust filtration for electronic enclosures and cooling systems. Featuring a high-density 100 pores per inch (PPI) polyurethane foam filter, this assembly effectively captures fine dust particles, safeguarding your equipment from overheating and potential damage. The durable plastic guard, rated UL94V-0 for flammab... https://gardteconline.com/products/120mm-fan-filter-100ppi-filter-assembly-sc120-p15-100