Whole House Duct-Mount HEPA Air Cleaner

New in Box, retails for $684 + tax Electro-Air EAHEPADM400-VS Whole House Duct-Mount HEPA Air Cleaner, 0-320 cfm This unit is to be installed directly on the return air vent or mounted directly to the furnace and collar mounted to the return air duct to save space. The Electro-Air Duct or Wall Mount HEPA Air Cleaners have been designed to remove atmospheric and household dust, coal dust, insecticide dust, mites, pollen, mold spores, fungi, bacteria, viruses, pet dander, cooking smoke and grease, tobacco and wood smoke particles, and more down to 0.3 micron (1/84,000 of an inch) with 99.97% efficiency on the first pass of air.