3M 2091 vs D3091: Bayonet vs Secure Click P100 Filter (2026)
3M 2091 vs D3091 compared for buyers. Both are NIOSH P100 particulate filters with the same 99.97% protection, but the 2091 uses the 3M bayonet connection (6000, 6500QL, 7500 masks) and the D3091 uses 3M Secure Click (HF-800, FF-800). They are not interchangeable. We cover compatibility, design differences and which to buy.
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