MSA Flexi-Filters P100 Filter Pad compatible with Advantage series air purifying respirator is suitable for a variety of applications and industries where particulate aerosols and nuisance odors exist. Filter pad is formulated to provide protection against nuisance level acid gas/HF. Filter pad featuring swept-back design and low profile make it great for use under welding hoods orany tight spot where a respirator must be worn.Low breathing resistance filter features multi-layer construction for high filter durability and a spark-resistant cover. Filter pad finds its application in Asbestos Abatement, sanding and grinding, welding and painting.