The 3M™ Maintenance Free Half Face Respirator 4251 is a ready-to-use, maintenance-free half respirator designed for effective and comfortable protection against organic vapour and particulate hazards found throughout industry (A1P2).

• Lightweight, low profile and well balanced design
• Textured face seal minimises slippage and improves comfort
• Use until damaged, particulate filters clog or gas filters become saturated
• Ideal for contractors, plant shutdowns and spill response
• Eliminates the need for a separate respirator, cartridge/filter or carrying out respirator maintenance
• Re-sealable bag provides convenient and clean storage between uses