Disposable respirator Dust Mask, providing superior fit, comfort and performance. Provides protection against dust, mist and fumes associated with masonry, wood, metalwork, welding and general mining. Valved version for easier breathing FEATURES Adjustable nose clip & soft nose piece Heavy duty double head straps. Protects against non toxic, low to average toxicity solid & liquid aerosols. Valve reducesthe hot air build up inside the mask for easier breathing. Use with welding, lead, oils, iron & zinc fumes. Lightweight disposable respirator No maintenance required Comfortable foam nose seal One Size Fits All LIMITATIONS This Dust Mask must not be used in: Oxygen deficient atmospheres (less than 18%) Stills, tanks or other confined spaces Atmospheres immediately dangerous to life and health and atmospheres containing toxic gases or vapours Situations where the particulate concentration exceeds 10 times its occupational exposure limit If more than 4 years from date of manufacture These Dust Mask should: Not be cleaned and re used Be changed when the filter becomes clogged Be disposed of as solid waste after use