[PERFECT FILTER]With all core filters are under standard, this true hepa filter replacement can be 99.97% effective in removing all odors and gases from your home. This air purifier replacement filter for is made of premium materials to best performance and a healthy , helpful for improving the air quality [WORTH YOUR MONEY] Package including 2 pc core filters. To your air purifier works properly and optimally, it is recommended to replace your filters every 3-6 months, depends on the usage [3-IN-1 DESIGN]Adopts 3-in-1 design (Fine Preliminary Filter, H13 Grade True HEPA Filter, Activated Carbon Filter) to trap cooking smell, smoke, VOC and other odors. Choosing high quality & durable filter with maximum-efficiency can help you save more money [COMPATIBLE MODEL]Our core 300 replacement filter is fully compatible for core 300 air purifier series, replace core 300-rf. To a , check twice whether your model matches our product parts purchasing Colour:White Material:Activated carbon cotton Size:192x112x150mm Package Contents: 2 * filter elements Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.