3M for particle insert filter, pack of 20, for particle insert filter, pack of 20, 1+ packs

Filter cover 501, for particle insert filter, pack of 20, 1+ packs. Supplied = assembled. Product type = accessories for full/half masks. Customs tariff number = 90200090. Country of origin = USA. Gross weight = 0.35 kg. Weight = 0.2 kg. Filter cover for combined use of a gas filter with particle insert filter. Easy to use. The 3M™ filter cover is required for combined use of the 5000 series particle insert filters with the gas and vapour filters.