BFE ≥ 98%50 Masks/BoxMask Dimension: 6.9” x 3.75” / 17.5 x 9.5 cmFinal sale. No refundable or exchange.OPSWA ASTM ADULT PROCEDURE MASK LEVEL 3 (MULTI-COLORS)C$8.00PriceColorQuantityAdd to CartPurchase Now