Abatement Technologies HEPA Filtration Unit. Model H600V. 600 CFM capacity. Variable speed. Triple filtration including a HEPA filter. Operates on standard 120V. Draws less than 2.0 Amps. Note that pre-filters are not included, but HEPA filters are. Everything is in excellent working order and ready to use. Price only $300 each or $800 for all three units.