A tailor-made filter cartridge for your Snapmaker 2.0, with five layers of different filters consolidated into one, is designed to absorb what's emitted during laser engraving or 3D printing process. A dense pack of activated carbon is also added to absorb VOCs that particulate matter filters can't capture. An unpleasant odor is no longer a problem. Two layers of 70 mm-thick HEPA H13 filter as the final stage gate. They can trap up to 99.97% of airborne particles of all sizes, including PM0.3 that are known to be the most penetrating particles in the air. Efficiency is not all that matters. The different levels of filter are arranged in certain order inside the cartridge to maximize its lifespan so that you won't need to replace the cartridge until it gets fully used. Snapmaker 2.0 carries out real-time monitoring on the Filter Cartridge and shows its lifespan on the Touchscreen. It lets you know when it's time to pop in a new one.