Hoover Vacuum Fold Away Filter - HooverVacuumBags.com
Hoover WindTunnel Bagless Secondary Filter fits below the Twin Chamber Dirt Container in the dirt cup including these popular models: C1701900, U5140900, U5144900, U5145900, U5146900, U5148900, U5150900, U5155900, U5156900, U5162906, U5162911, U5164900, U5165900, U5167900, U5167950, U5170900, U5172900, U5173900, U5173950, U5174900, U5175900, U5175950, U5176950, U5177900, U5178900, U5179900, U5179906, U53019RM, U53029RM, U5348911, U5402900, U5409955, U5416900, UH30015, UH30030HD, UH40155, UH40185, UH40190. Clean each time the dirt cup is emptied or dust bag changed. Replace every 3 to 6 months.
This filter has changed from a cartridge to just a filter without a frame.