Ventilator HEPA Filter, High Efficiency Filter for Anesthesia & Ventilator Breathing Circuits This Ventilator HEPA Filter is a high-efficiency filter specially designed for anesthesia machines and ventilator breathing circuits. It adopts professional pleated filter media to capture bacteria, viruses and fine particulate contaminants in the gas flow, effectively preventing cross-contamination within the respiratory circuit and protecting both patients and equipment. Made of