3-Stage Filtration, layer by layer: Built to remove 99.97% of airborne particles and VOC slayer by layer. Ensuring clean, safe air in your workspace. G4 Pre-Filter: Blocks 95% of resin dust/large debris Filament shreds, plastic dust, and fibers 2.8㎡ Large-Aera H11 HEPA Filter: Removes 99.97% of 0.3um particles Ultrafine dust and condensates High-Dense Activated Carbon Mesh: 3x denser than standard carbon filters heavy-duty adsorption of PLA/ABS odors 1000h+ Long-Lasting Filtration: Fewer Replacements