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The 3M 4255 Maintenance Free Respirator is a lightweight, ready-to-use half mask designed for effective and comfortable protection against respiratory hazards.
This half mask requires no parts assembly or maintenance and is designed for protection against organic vapours and particulate hazards.
This is for up to 10 x Workplace Exposure Limit (or 5000ppm, whichever is lower), and up to 20 x WEL in the case of particulates.
It features two large bonded carbon filters for low breathing resistance and soft, non-allergenic face piece material with textured face seal.
This 4255 reusable half mask has been designed with a low profile to allow a better peripheral vision, it has an adjustable head cradle and easy to fasten neck straps.
To improve comfort, the exhalation valve has been centrally positioned, which allows for an effective removal of heat and moisture.
These respirators can be reused until damaged, the particulate filters become clogged, the gas filters become saturated or after one month.