Usage Tips:Fine preliminary Filter traps larger particles in the air like dust, hairs, pet fur, lint and more Premium H13 grade true HEPA filter captures 99.97% of airborne particles down to 0.3 Micrometres in size High-efficiency activated carbon filter absorbs household odors from pets, cooking, smoking, wildfire, and harmful VOC's Regular filter replacement: for optimal filtration and strong suction performance, regular filter replacement is recommended RECOMMENDED REPLACEMENT: It is recommended that the filter be replaced every 4-6 months to optimal results. [Product Name]: Compatible with () air purifier filter element [Compatible model]: for 4lite [Product use]: Purify the air Colour:blue Material:plastic Size: 200 x 307MM Package Contents: 2 x Air Purifier Filter 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.