Standard Surgical Masks. Our surgical masks give you peace of mind in the O.R. The Standard Surgical Mask with Ties (NON27376) and the Horizontal Tie Surgical Mask (NON27600) feature cellulose inner and outer facings that keep the wearer cool and comfortable. The Surgical Mask and Ties (NON27377) and Surgical Mask with Shield and Ties (NON27420) feature soft, fluid resistant polypropylene inner and outer facings assuring comfort on the inside and protection on the outside. The Full-width nosepiece guarantees proper fit. BFE > 97% PFE > 98%.