Honeywell Cartridge Particulate Filter 7580P100 is a compact P100 filter designed to provide 99.97% efficiency against particulates. Its reduced profile is 45% thinner and more than 60% smaller in overall volume, helping reduce filter bulk while providing a wider view of the work area. The lightweight design can also fit beneath equipment such as welding helmets and face shield. The filter has a durable, lightweight outer casing and color coding for easy identification. It is NIOSH approved and sold in pairs