Austin Air, Bedroom Machine Filter Color:Bedroom Machine Filter- Black Other types of hardwood should

Other types of hardwood should check with manufacturer's instructions

The Kahrs World Collection is no exception

Clinically proven — the only air purifier made in the USA that has been tested and proven at major hospitals

Fast-curing — in as little as 12 hours

Austin Air, Bedroom Machine Filter Color:Bedroom Machine Filter- Black Other types of hardwood shouldBedroom Machine Replacement Filter This is a replacement filter for the Austin Air Bedroom Machine Air Purifier This primary filter includes medium particle filter, 15 lbs of activated carbon zeolite blend and True Medical Grade HEPA filter. Replace approx. every 5 years. It comes in two colors; black and white. Use the Black filter with black and midnight blue colored air purifiers, and the White filter for white and sandstone colored air purifiers.