Honeywell North N-Series Cartridges Combination filter cartridges feature a low profile with curved top that will not catch on pipes or other objects Easy-to-perform user seal checks, even on the gas and vapor cartridges Used with 5400 Full Facepiece Respirators; 5500 Full ...Honeywell North N-Series Cartridges Combination filter cartridges feature a low profile with curved top that will not catch on pipes or other objects Easy-to-perform user seal checks, even on the gas and vapor cartridges Used with 5400 Full Facepiece Respirators; 5500 Full Facepiece Resistance to Acid Gases & Organic Vapors Honeywell N75002L filters and cartridges are compatible with Honeywell North 5400, 5500, 7600, and 7700 reusable respirators. Particulate filters and vapor cartridges are NIOSH-rated and installed in reusable half-mask or full-face respirators. They can easily be changed out when they become dirty.