Honeywell North 54001S Full-Face Respirator Gas Mask SMALL, NOB few scratches. NEW no box, few minor scratches pictured last. The Honeywell 5400 Series is the ideal workhorse respirator for subcontractors and other occasional users. The facepiece is made from a soft, thermoplastic elastomer that fits comfortably and is latex free. With a wide sealing area, the mask fits a variety of facial types. The polycarbonate lens offers a 200° field of vision and downward view for optimal sight in all directions. The lens is also designed to withstand high impact, thereby eliminating the need for additional eye protection. The 5400 Series facepiece provides the integral features needed for compliance.