3M Scotchgard Semi-Permanent Lens Protector offers guaranteed performance in protecting 3M ultimate FX full facepiece reusable respirator series FF-400 lens. Respiratory protection lens cover accessory is best suited for demolition, facility maintenance, grinding, sanding and welding operation. It finds wide range of application in automotive, construction, manufacturing, metal production, fabrication, military maintenance, mining, oil, gas, pharmaceutical, transportation, food and beverage manufacturing.