3M-A1P2R-Half-Mask-Filter-3000-Series-3M-WX700900912-P-align-left-This-3M-A1P2R-filter-is-for-half-masks-in-the-3000-Series-&-is-a-combined-filter-that-protects-against-both-solid-liquid-particles-&-organic-vapours-P-3M™-WX700900912-3000-Series-3391-A1P2R-With-Pre-Attached-Filter-1-Piece