Light regenerating deodorizing filters; 2 pieces; Removes unpleasant odors and toluene, and other VOC products. Replacement Estimate: Approx. 3 years; External Dimensions: Width 1.6 x Length 7.7 inches (40 x 195 mm) / *Please check the compatible model before placing your order. Change time may vary depending on the time of use and location.