Next Product Pre Filters for Masks 15 Pairs £38.47 15 pairs of pre filters are included per box, suitable for masks. Pre Filters for Masks 15 Pairs quantity Add to basket Category: Masks and filters Related products Quick View Quick View Masks and filtersPaint Shop Respirator £23.46 Add to basket Quick View Quick View Masks and filtersGas Cart Filters £49.70 Add to basket Quick View Quick View Masks and filters3M Premium FFP2 Face Mask £30.30 Add to basket