- N95 Respirator (N99 or 99PFE-L3), Health Canada Authorized, CSA Certified - Industry-leading fit - 99% Filtration - Industry-leading breathability - Level 3 Surgical Respirator (>160 mmHg blood penetration resistance) - Fully Aluminum Nose Piece (MRI compatible) - Box of 25 - Headband Donning - Graphene-Free - Made in Canada - Cases now contain 550 Units