5500 Series Half Mask with 2 Defender Multie Purpose/P100 cartridges Sizes Small Half mask respirator complete with defender multi-contaminant cartridges/P100 filters Common applications are exposure to vapors and gases plus particulates such as dusts and fumes The defender also offers protection from formaldehyde Available in small size Half mask respirator complete with defender multi-contaminant cartridges/p100 filters Common applications are exposure to vapors and gases plus particulates such as dusts, mists and fumes including asbestos and lead, and atmospheres The defender also offers protection from formaldehyde Available in small size