Kenmore model 83395 is a Medium Room HEPA Filter Air Purifier available at Sears stores or on Sears.com (also available at Kmart.com.)
It contains 2-stage filtration with a charcoal pre-filter and HEPA filter. This unit is rated as capable of filtering the air in rooms up to 280 sq ft. The unit also includes a negative ionizer that can be switched on or off. Three fan speeds allow adjustment of filtering and vary sound output. On the high setting the fan is somewhat loud, but not so loud that it would drown out conversation.
Replacement filters are available at ShopYourWay.com, Sears.com, Kmart.com, or through many aftermarket channels.