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Lightweight disposable facemasks attached with elasticated straps and adjustable nose clip, which delivers a contoured fit. FFP1 masks have an APF (Assigned Protection Factor) of 4, therefore if worn correctly they will reduce exposure by at least a factor of four.Conforms to EN149-FFP1 SpecificationsNB: This dust mask is NOT a respiratory protective device and SHOULD NOT be used against fine particles, gases, vapours or paint sprays. It SHOULD NOT be used where a device with European Directive 89/686 or 89/656 is required.