2 Room Air Purifiers – About EL Foust air purifiers: they are specifically designed for people with multiple chemical sensitivities or MCS. That means no plastic and no glues. The all metal construction does not allow it to absorb odors or off-gas volatile organic compounds like plastic. The all metal construction also means it won't be taking up space for 1,000 years after it has reached the end of it's lifespan. The 160R2-1 contains 7 lbs. of activated carbon mix and controls particles with an optional HEPA rated at 0.1 micron efficiency. It has performed well in independent lab tests; and is used & recommended by allergists & environmental doctors nationwide. 23"tall x 8"