60 Ppi PU Sound Absorbing Filter Foam Sheet for Mic Cover & Industrial Protection

60 Ppi PU Sound Absorbing Filter Foam Sheet for Mic Cover & Industrial Protection. High Dust-holding Capacity : Uniform reticulated open-cell structure captures fine dust particles effectively to keep air clean and extend service life of downstream equipment. Washable & Reusable Performance : No frequent replacement required, simply rinse off accumulated dust, restore filtration performance and cut your material procurement cost. Wide 10-80 PPI Custom Range : Multiple pore size options from coarse to fine filtration, supports custom thickness & size to match different industrial filtration requirements. Multi-scene Industrial Compatibility : Flexible resilient PU foam fits dust collector, ventilation & HVAC system, works stably for indoor and semi-outdoor filtration projects.