Item Type: 5N11CN Filter Material: Fiber Compatibility: 5N11CN filter needs to be installed on 6001 cartridge. Suitable for 6100 6200 7501 7502 6502 6800 gas cover. Widely Used: In scenarios such as renovation work, mining, waste removal, painting, grinding, epoxy, etc., this filter cotton prevents airborne particulate dust from entering the respiratory tract. Package List 50 x 5N11CN Filter Each filter requires 8 hours of protection. Replace the filter immediately when you feel that the breathing resistance is significantly too high, when the human feels discomfort, or when the filter dust becomes dirty or damaged. 1Excellent Compatibility: 5N11CN filter needs to be installed on 6001 cartridge. Suitable for 6100 6200 7501 7502 6502 6800 gas cover. 250Pcs in Kit: There are 50 filters in the 5N11CN filter kit, the quantity meets your daily work and life needs. 3Good Replacement Parts: Our 5N11CN filters are good replacement parts for good old or broken filters, light weight. 4Multiple Layer Structure: Our 5N11CN filter has at least 95% high electrostatic filtration and multiple layer structure for easy installation. 5Applicable Scenarios: This 5N11CN filter is suitable for renovation work, mining, waste removal, painting, grinding, etc.