Hoover Part Number 40130050 Cartridge Filter Type 50 Fits Foldaway Model U5172-900 By ZVac<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Hoover Part Number 40130050</li><li>1 Type 50 Filter</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41xL2ZpLAuL.jpg" noproxy>