Purifies air in rooms up to 500 square feet. Silent yet moves 300% more air than similar units. No filter to replace - collection rods trap impurities. Easy-to-use one-touch operation easy to clean. Air purifier dimensions: 9.5L x 7.25W x 28H inches. The Ionic Pro TURBO TA500 Ionic Room Air Purifier is silent when in use yet removes unpleasant odors allergens and pet dander in a room up to 500 square feet. This convenient air purifier moves 300% more air than similar ionic air purifiers and has no filters to replace. Front-loading collection blades make clean-up easy. Used, works great Price Firm, I will be purchasing an extra $25 label for the extra weight over 5 pounds so I can ship.