Filtro HEPA portatil para escuelas - Portable HEPA filter for schools, avoid COVID modèle 3D almost 2 years 20 Lack Enclosure HEPA and VOCs Air Filter modèle 3D almost 2 years 17 Nanohack mod (two filters + improvements) modèle 3D almost 2 years 15 Coronavirus: Doctor!Doctor! - Portable HEPA Air Filter (Beta) modèle 3D almost 2 years 7