Israeli Civil Defense 40mm Gas Mask Filter – Easy Breathing, NATO PACK OF 3. This is a high-quality Israeli Civil Defense 40mm gas mask filter, designed for people who need reliable respiratory protection without unnecessary weight, bulk, or breathing strain. This filter is especially suitable for situations where comfort, mobility, and sustained wear matter. Condition:? Brand new? Factory sealed and airtight? Never used? No prior exposure of any kind. Why This Filter Stands Out. Easy-breathing design – built for comfortable airflow and reduced fatigue during extended wear. Lightweight, balanced feel – helps reduce neck strain while moving. Low-profile polymer body – durable and comfortable compared to older bulky steel canisters. Standard 40mm NATO threaded connection – widely compatible with 40mm threaded masks. Protection Use Profile (Practical Use). Designed for real-world environments involving. Smoke and airborne particulates. Riot control agents and irritant aerosols (CS / CN). Pepper spray (OC) aerosols. Dust, debris, and urban airborne irritants. General personal respiratory protection scenarios where steady breathing matters. The internal airflow design prioritizes natural breathing and comfort, making it well suited for crowded environments and situations where calm, controlled breathing is essential. This filter type was issued for Israeli civil defense use and stored inside protective gas masks. Estimated production period is around 2020. Military markings were removed prior to sale. Compatibility – 40mm NATO Thread (EN 148-1 / Rd40). This filter uses the standard 40mm NATO threaded connection, also known as. It fits any gas mask or respirator that has a true 40mm threaded inlet. Many brands sell the same mask in different connector versions, so please read the fit-check below. Confirm your mask has a screw thread: You should see a round threaded port labeled “40mm / Rd40 / EN 148-1 / NATO”. Fast rule: if the mask says EN 148-1 / Rd40 / 40mm NATO? This filter fits. Compatible Gas Masks (Large Model List – 40mm Threaded Versions Only). MIRA Safety (40mm NATO / EN 148-1). AVON Protection (40mm NATO-thread models / variants). FM12 (40mm standard NATO thread). C50 (variant designed to use NATO 40mm threaded filters). MSA (EN 148-1 / Rd40 versions). Ultra Elite (Rd40 / EN 148-1 versions). Advantage 3121 (RD40 with single thread EN 148-1 connection). Millennium (40mm threaded versions). Dräger (Rd40 / EN 148-1). X-plore 6300 (Rd40 connection compliant with EN 148-1). Honeywell / Survivair (Rd40 / EN 148-1 versions). Survivair Opti-Fit Full-Face Mask (Rd40 / EN 148-1 versions). Honeywell Opti-Fit (Rd40 / EN 148-1 versions). Interspiro (EN 148-1 / Rd40). Interspiro Respire Filter Mask (threaded connector EN 148-1 / Rd40). 3M (40mm EN 148-1 threaded systems / versions). 3M FF-300 Series (used with approved DT-Series filters with 40mm EN 148-1 thread). 3M Scott (EN 148-1 / Rd40 threaded versions). Scott Promask FF-302 / FM3 (EN 148 / RD40 threaded connection versions). Other EN 148-1 / Rd40 full-face masks you may see (40mm threaded inlet). Interspiro and other fire/industrial full-face masks explicitly labeled EN 148-1 / Rd40. Industrial full-face masks advertised as “Universal DIN RD40 connection (EN148-1)”. 3 × sealed 40mm gas mask filters. MIRA Safety CM-6M CM-7M CM-8M 40mm NATO gas mask filter AVON FM12 C50 40mm threaded filter compatible MSA Ultra Elite Advantage 3121 RD40 EN 148-1 filter Drager X-plore 6300 Rd40 EN148-1 gas mask filter Honeywell Survivair Opti-Fit Rd40 EN148-1 filter Interspiro Respire EN148-1 Rd40 filter mask compatible 3M FF-300 DT-Series 40mm EN148-1 filter thread Scott Promask FF-302 FM3 EN148 RD40 gas mask filter.