Best 3M Full Face Respirator (2026) — A Complete Buyer's Guide to All 9 Models
Which 3M full face respirator should you buy? Honest comparison of all 9 reusable full face respirators 3M sells — 6000 Series, Ultimate FX FF-400, and 7800S — across three sizes each. The 6800 Medium is the right default for most programs, the FF-402 wins on comfort and speech, and the 7800S-M is the heavy-duty pick for ten-plus-hour shifts in harsh conditions.