[Compatibility ]- Premium provides a Filter for the following models: NV350 NV351, NV352, NV355, NV356E, NV357, NV360, NV370, NV391, UV440, UV490, UV540. This part is made to replace for Part # XFF350 and XHF350.[Efficiency Filter]- The Vacuum Filter Replacement pack is complete with 4 foam filters, 4 textured felt filters, and 2 allergen trapping HEPA filter. Each material works for maximum efficiency in collecting and trapping dust and allergens.[ ]- This filter have Super suction and perfect performance, always to keep you satisfied and your floors as clean as ever! premium filters are to the filter you find in your vacuum. Using this filter to help you keep a sparkling clean floors.[Washable & Reusable ]- premium replacement filters now last than ever ! You an now re-use each filter simply by rinsing with cold water and allowing to air dry.We recommend you to replace the vacuum filter 3-6 months for optimal performance. Protects your vacuum motor, extends the life of your vacuum cleanerColour:white + blackMaterial:plasticPackage Contents:4 x Foam Filters4 x Felt Filters2 x HEPA FiltersOnly the above package content, other products are not included.Note: Light 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.