SmoothNovelty 2 Pcs Waterproof and Dustproof Prefilter Hydrophobic Mesh Air Filter Fabric 12x12 Inch, Washable Cut to Fit HVAC Intake Filter, Reusable Polyester Pre Sheet for Ac Furnace Vent

["Prefilter Air Filter Fabric: 12x12 inch waterproof and dustproof prefilter air filter fabric can be easily cut to any size; The mesh density is 130 mesh per inch; The mesh size is 115 microns or 0.0045 inches; Ideal for HVAC vents, intake openings and air purifiers; Flexible DIY solution for multiple filtration needs","Hydrophobic Mesh Air Filter: made of hydrophobic mesh air filter fabric, effectively repels water while maintaining airflow; Prevents clogging from moisture and debris, ensuring long-lasting performance","Dust Blocking Efficiency: this dustproof prefilter captures large particles like dust, sand and lint before reaching main filters; As small as 0.0045 inches, it helps extend filter lifespan and improve system efficiency","Reusable Air Filter Sheet: durable polyester structure supports repeated washing without deformation; Designed specifically to cope with harsh environments; Just rinse and it can be applied again","Hvac Intake Filter: works as HVAC intake filter, vent filter, air purifier prefilter, stereo speakers, outdoor electronic products, and automotive intake filter; Ideal for home, garage, workshop and industrial environments"]