Home Filter performance ≥ 95% Flow rate is 85 L/min Total inwards leakage (TIL) ≤8% Inhalation resistance ≤ 350 PA CO 2 clearance ≤ 1%KN95 Mask (50 count)$150.00PriceQuantityAdd to CartPRODUCT INFO50 count per case SHIPPING INFOFree. Arrival time is 7 - 14 days. Please email if this is a rush order NO REFUNDS