3- Ply or 4-Ply Surgical Face Masks - Level 3 - Box of 50 - Carton of 50 Boxes ASTM Level 1 2 3 Surgical Face Masks 3-ply face mask PP + Melt blown + PP Size: 175 x 95 mm (±5) Earband: 175 x 15 mm (±5) Nose wire: 115 x 3 mm (±5) Color: White/Blue 4-ply face mask PP + PP + Melt blown + PP Size: 175 x 95 mm (±5) Earband: 175 x 15 mm (±5) Nose wire: 115 x 3 mm (±5) Color: White/Blue Fluid resistant - 160mmHg Hypoallergenic >99% BFE Single use only Complies with ASTM Level 3 Carton Quantity - 50 Packs MOQ: 1,250,000 pieces Made in Vietnam ASTM Levels Level 1: masks are the general standard for both surgical and procedural use. Level 2: moderate barrier protection for low-to-moderate levels of aerosols, sprays and fluids. Level 3: maximum barrier protection for any situation that has the potential for exposure to heavy levels of aerosols, sprays and fluids.