Topic 3: Personal HEPA Air Filter Checklist (web-based) By Natacha Letort | October 6, 2021 Take the C.A.R.E. Pledge For General Business Employers Lesson 3: Assess and Improve Your Building’s Ventilation Topic 3: Personal HEPA Air Filter Checklist (web-based) Complete the web-based personal HEPA air filter checklist. Download Here Previous Topic Back to Lesson Next Lesson