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 performance H13 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 other Long-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 replacements It 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 Color Material:plastic Package Contents: 1 x AP-T45 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.