Genuine Replacement Filters: Search for core300-rf or core 300 replacement filter for Replacement Filters. Use genuine Levoit replacement filters to maintain the best performance and to ensure what you're buying is worthy of your investmentHigher Purify Performance: Use the Core 300 to fill your environment with crisp, clean air. Its Vortexair Technology creates a stronger air flow, CADR number is 230+m3/h, allowing it to cover up to 219 sq. ft. AC 120V/60HZ for USA and CanadaImproved Filtration: With larger expansion area and longer length than others, the H13 Ture HEPA filter works with ultra-fine Pre-filter and activated carbon filter, trapping 99. 97% of fine particles and allergens as small as 0. 3 microns and large pollutants such as dust, pet dander, smoke, mold, pollenMost Silent Air Cleaner: The noise level is nearly voiceless at sleep mode with only 24db, its QuietKEAP Technology reduces noise so you can sleep in a restful and soothing indoor environmentUltra-long Service Life: Industry leader provider's bearing makes this levoit core300 hepa air purifier durable and reliable. The AC capacitor motor uses durable high-precision bearing, and excellent internal structure increases abrasion resist, which obviously extends the life of machine