DIY KIT: Mitigate Radon and provide HEPA filtered fresh air into a dwelling at a manually adjustable rate. , Kit includes 12vdc plug-in power supply, speed controller, mylar sleeve, Honeywell HRF-11 HEPA filter, ABS plastic cover, indoor grille with directional airflow. HEPA filter rated to remove an incredible 99.97% of particulate 0.3 microns and larger. Our lab testing reveals even better than 99.97% particulate removal.
An optional Carbon Dioxide Controller that will operate air delivery to automatically maintain an indoor carbon dioxide level of around 600 parts per million for three to seven occupants.
This filter will remove most, 99.97%, but not all smoke particles, and the odor of smoke not not be completely eliminated from the delivered fresh air.