LEVOIT Air Purifiers for Home Allergies Pet in Bedroom, H13 True HEPA Filter Air Purifier Removes 99.97% Smoke Dust Pollen Odor,Core 300Improved Filtration: Its Vortexair Technology creates a stronger air flow, CADR number is 135+ CFM, allowing it to cover up to 215 sq. ft; With larger expansion area and longer length than others, the H13 True HEPA Filter works with ultra fine Pre filter and activated carbon filter, trapping 99. 97% of fine particles as small as 0. 3 microns and large pollutants such as pollen, dust, pet dander, smoke Ultra long Service Life: The AC capacitor motor