Trend AIRACE Airace half mask Dust mask with replaceable filter for use when routing, for industrial and construction work, DIY and various other trades. Five times larger surface area than the average disposable dust mask, giving superior protection against dust inhalation and offering considerable cost savings. The one way exhaust valve vents to the underneath,preventing exhaled air from fogging goggles or the optional visor. This also ensures that the filter stays dry reducing filter clogging and prolonging its life. P2 electrostatic filter has approximately life of ten times that of average disposable facemask. Protects the user against hazardous toxic dust particles, metal fumes and mist to classification P2 and down to 0.3 microns enabling use with MDF.Specification-Weight 286gRespiratory protection to BS EN143 P2