Usage Tips:Compatibility: Our AP-T45 AP-T40FL HEPA Replacement Filter is for Purifier,AP-T45/T45WT/T40/T40WT/T40W TAR HEPA Filter. Rest that this filter fit seamlessly into your purifier, ensuring optimal performanceH13 True HEPA Filter: The AP-T45 AP-T40FL HEPA Replacement Filter features advanced H13 True HEPA filtration technology. Effectively captures up to particles as small as 0.3 microns, including dust, pet dander, smoke, cooking smell and otherLong-lasting and Cost-effective: Providing you with a cost-effective solution for maintaining in your Purifier. With its construction, this filter is built to last, delivering long-term value and saving you money on frequent replacementsIt is recommended to replace your filter every 6 to 12 months to maintain optimal performance.Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Colour:Photo ColorMaterial:plasticPackage Contents:1 x AP-T45 FilterOnly 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.