DescriptionThe Moldex 2730 Series N100 Particulate Respirators feature the Moldex HandyStrap that allows the respirator hang down around the neck while not in use.2730 N100 Respirators Feature: Ventex exhast valve to reduce heat build-up Dura-Mesh shell, which resists collapsing in heat and humidity Naturally contoured facepiece Foam nose bridge for added comfort Flame resistant N100 respirators are NIOSH certified to have filter efficiency level of 99.7% or greater against non-oil based particulatesAn ideal respirator for environments where an OSHA substance specific standard applies (lead, cadmium, arsenic, MDA) as well as pharmaceutical manufacturing, conventional and nuclear power generation, welding, cutting and metal pouring. Made in the USA5 respirators / box