Msa Gas Mask Facepiece, Ultravue & Ultra Elite Full Facepiece Respirator, Bk. Ultravue facepiece is part of the Chin-Type Gas Mask. 1 per EA a protective system consisting of facepiece and canister. Scratch-resistant polycarbonate lens that provides a wide field of vision. Features a nosecup that helps reduce lens fogging in low temperature conditions or in high-humidity conditions. Resistance=Organic Vapor; Particulate Matter; Gases.