Surge mask CP white 50 piecesSurge mask CP white 50 pieces This is a high performance surgical mask that complies with ASTM F2100 19 Level 1. It uses a high performance filter that cuts 99% of BFE and PFE. It has a resin nose bridge. High performance surgical mask that complies with ASTM F2100 19 Level 1. Uses high performance filters that cut BFE and PFE 99%. Approximately 17595mm Pack of 50 Nonwoven fabric, resin