These filters can efficiently filter dust with a purification rate of 99.9% and capture pollutant particles as small as 0.3 Micrometres. check your machine number or part number purchase. The vacuum filter replacement are easy to install and replace without any tools. In order keep your Lift- Deluxe vacuum in good performance, it is recommended to replace the filters 2-3 months. The vacuum filter replacement for Navigator Lift Deluxe included 2 HEPA filter and 2 foam filters. High-quality filters can keep your environment clean and healthy. These vacuum filter replacement fit for Vacuum Navigator Lift- ZU503AMZ, NV350, NV351, NV352, NV355, NV356E, NV357, NV360, NV370, NV391, UV440, UV490, UV500, UV540, UV541, UV550, Part XFF350 XHF350 Colour:black+white Material:cotton+plastic Package Contents: 2 x HEPA Filter 2 x Foam Filters 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.