OVP-11 Combination Filter (A2B2E2K2P3) | Full Spectrum NBC Gas Mask Filter

OVP-11 A2B2E2K2P3 Combination Filter — Maximum Spectrum NBC Gas Mask Protection

The OVP-11 is a full-spectrum A2B2E2K2P3 combination gas mask filter engineered for maximum NBC and CBRN respiratory protection. Designed for use with the TinBreather Full Face Gas Mask, the OVP-11 defends against the broadest range of chemical, biological, and radiological threats in a single cartridge — including organic vapors, inorganic gases (chlorine, hydrogen cyanide), acid gases, ammonia, and the highest class of particulate filtration.

FULL PROTECTION RATINGS BREAKDOWN

• A2 — Organic Vapors: Solvents, hydrocarbons, VOCs, and chemical vapors up to 1000ppm
• B2 — Inorganic Gases: Chlorine (Cl₂), hydrogen cyanide (HCN), hydrogen sulfide (H₂S) at Class 2 capacity
• E2 — Acid Gases: Sulfur dioxide (SO₂), hydrogen chloride (HCl), and other acid vapors at Class 2
• K2 — Ammonia: Ammonia (NH₃) and methylamine derivatives at Class 2
• P3 — Particulates: ≥99.95% filtration efficiency — the highest EN 143 class — against fine dust, smoke, biological aerosols, mold, and radioactive particles

WHAT THE OVP-11 PROTECTS AGAINST

• Organic chemical vapors (VOCs, solvents, hydrocarbons)
• Chlorine gas — industrial accidents and chemical warfare
• Hydrogen sulfide — industrial gas and sewer environments
• Hydrogen cyanide — chemical warfare agent
• Acid gases (SO₂, HCl, hydrogen fluoride)
• Ammonia and ammonia-based compounds
• Wildfire smoke and toxic combustion particulates
• Biological aerosols and airborne pathogens
• Radioactive dust and nuclear fallout particulates
• Broad-spectrum CBRN and NBC threat agents

FILTER SPECIFICATIONS

• Classification: A2B2E2K2P3
• Particulate Efficiency: P3 — ≥99.95% (highest EN 143 class)
• Thread Standard: 40mm NATO (EN 148-1)
• Compatibility: TinBreather Full Face Gas Mask
• Standard: EN 14387 / EN 143
• Shelf Life (Sealed): ~5 years

OVP-10 vs OVP-11 — WHICH DO YOU NEED?

The OVP-10 (A2P3) is ideal for organic vapors and particulate protection — excellent for wildfire smoke and general emergency preparedness. The OVP-11 (A2B2E2K2P3) adds protection against inorganic gases (chlorine, hydrogen cyanide), acid gases, and ammonia — making it the choice for maximum NBC/CBRN protection and industrial chemical threat environments. If you only buy one filter for serious preparedness, choose the OVP-11.

FREQUENTLY ASKED QUESTIONS

What does A2B2E2K2P3 mean? This is a European filter classification under EN 14387: A2 = organic vapors, B2 = inorganic gases (Cl₂, HCN, H₂S), E2 = acid gases (SO₂, HCl), K2 = ammonia (NH₃), P3 = highest-class particulate filtration (≥99.95%). This is one of the broadest protection ratings available in a single filter cartridge.

Does the OVP-11 protect against nerve agents? The A2 rating covers many organic chemical warfare agents. For confirmed nerve agent environments, military-grade CBRN filters rated to STANAG 4155 provide the highest verified protection. The OVP-11 provides strong general organic vapor coverage as a preparedness filter.

How long does the OVP-11 last in use? Replace immediately if you detect odor breakthrough. In use, filter life depends on the concentration and type of contaminant. Sealed shelf life is approximately 5 years. Always store sealed until needed.

Is the OVP-11 good for preppers and survivalists? Yes — it is the highest-protection filter option for the TinBreather system and provides the best coverage for unknown or multi-threat SHTF scenarios where you may face chemical, biological, or radiological hazards simultaneously.

Can I use the OVP-11 with other gas masks? The 40mm NATO thread is compatible with most full face gas masks using the EN 148-1 standard. It is designed and tested for the TinBreather Full Face Gas Mask.

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