The Dri-Eaz DefendAir HEPA 500 portable air purifier delivers advanced clean-air performance with up to 500 CFM of variable airflow to remove dust, mold spores and particulates on restoration and construction jobs. Its two-stage HEPA filtration captures 99.97 % of particles down to 0.3 microns, while rugged polyethylene housing, daisy-chain capability and stackable design make it reliable on demanding job sites.