OVP-11

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.

Orders typically process within 1–3 business days after payment confirmation. Shipping options and charges are shown at checkout. Delivery estimates depend on the destination and service selected.

Unopened packages only. OVP-10, OVP-11 and other gas mask filters are eligible for return within 30 days of delivery only when their original packaging is unopened, all factory seals are intact, and the filters are unused. Opened, unsealed, installed or used filters cannot be returned, even if they appear unused.

Contact us for a Return Authorization (RA) number before shipping. If an item arrives damaged, defective or incorrect, contact us promptly with your order number and photos so we can help.