3m filters for face masks a1 a2 abek1 p2 p3 3m 6099 this 3m8482 gas amp combination filter abek1 can be used on all 6000 7000 and 7500 series half masks and full face masks lightweight with low breathing resistance the filter remains well balanced when fitted to a mask providing excellent field of vision as a result of the unique trapezoidal shape when used with facepieces from the 6000 series it is capable of providing protection against organic vapours with boiling po