[Perfectly Compatible]The filter is compatible with Levoit Air Purifier LV-H133, LV-H133-RF. Pls make sure the filer meet your model. [3-in-1 Design] The filter include pre-filter, H13 grade true HEPA filter and high efficiency activated carbon filter. [True HEPA Technology]True HEPA filter is able to capture 99.97% particles as small as 0.3 Micrometre, which can help improve the environmental of the room and make your life more comfortable. [Life Time]In order to improve the performance of the air purifier, we recommend replacing the filter every 6-8 months. Material: Plastic colour: Black+White Package Contents: 1 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.