Blue Anatomical Face Mask With Elastic Ear Loops (Pack of 20) B1 1/4-7 x 2 3/4 Part # NAS1352C047

Part # NAS1352C047

Part # MS35276-267

Part # MS51957-23

Part # NAS1352N0812

#10 x 1" Sealing Hex Washer Head Self-Drilling Screws 410 Stainless Steel with Bonded 18-8 Stainless and Neoprene Washer 100 pack

Blue Anatomical Face Mask With Elastic Ear Loops (Pack of 20) B1 1/4-7 x 2 3/4 Part # NAS1352C047These masks contain two layers of 100% polypropylene, spunbond SS (2 ply), non woven fabric providing a superior penetration barrier. Features Outer shell provides high fluid resistance and inner layer supplies high density filtering Highly durable Hygienic and safe Lightweight, flexible and breathable Non toxic, non irritating One size fits most Technical Information Bacterial filtration efficiency greater than 99% for media larger than 3 microns