DYOB Activated Charcoal 4 FILTERS 40mm Thread. YOU GET 4 FILTERS. The DYOB Activated Charcoal Filter is a state-of-the-art respiratory protection device designed for use with all gas masks equipped with a 40mm NATO threading. Engineered for maximum safety and efficiency, this filter provides unparalleled protection against a wide range of chemical, biological, radiological, and nuclear (CBRN) threats, as well as against particulates and harmful pollutants in the air. Advanced Activated Charcoal Layer. The core of the DYOB filter is its high-grade activated charcoal layer. This material is renowned for its ability to adsorb and trap toxic gases, vapors, and harmful particles, effectively purifying the air you breathe. It offers comprehensive protection against various threats, including toxic industrial chemicals (TICs), chemical warfare agents (CWAs), and a wide spectrum of biological contaminants. Built to last, the DYOB filter is encased in a robust, impact-resistant shell, ensuring it remains effective in harsh conditions and environments. Its long shelf life makes it an ideal choice for emergency preparedness kits. Designed for simplicity, it can be easily screwed onto any gas mask with a 40mm NATO thread, allowing for quick and hassle-free filter changes in critical situations. Despite its dense filtration media, the filter allows for easy breathing, minimizing user fatigue and ensuring comfort even during extended use. 40mm NATO standard, making it suitable for a wide range of military, industrial, and civilian masks. High-quality activated charcoal with additional layers for particle filtration. Lightweight design to minimize burden on the user. Compact form factor to not obstruct vision or movement. Meets and exceeds various international standards for safety and efficiency. The DYOB Activated Charcoal Filter is designed to be universally compatible with any gas mask or respirator that utilizes a 40mm NATO threading. This includes a wide range of military-grade masks, industrial respirators, and civilian protection devices, making it a versatile choice for various users. Gently screw the filter onto the mask’s 40mm thread until it is securely attached. Ensure that it is fastened correctly to prevent any leakage. Remove the black rubber lid on back of filter (replace the rubber lid once done). Once attached, the mask is ready for use. Breathe normally, and the filter will automatically begin purifying the air. Regularly check the filter for any signs of damage or saturation. Store the filter in a cool, dry place away from direct sunlight to preserve its efficacy and extend its shelf life. The DYOB Activated Charcoal Filter represents the pinnacle of respiratory protection technology. Offering superior protection, ease of use, and durability, it is an essential accessory for anyone in need of reliable air purification. Whether for professional, military, or personal use, this filter ensures that you can breathe safely in any environment, making it a wise investment for your health and safety.