Amazon.com: MaximalPower Replacement HEPA Filter (2 Pack) for Hoover 51000 Series and TurboPower 3100 Series Upright Vacuum Cleaners : Home & Kitchen
Amazon.com: HQRP Cartridge HEPA Filter Replacement for Hoover 40130050, 43615090 Type 50 Compatible with Hoover Fold Away & Turbo Power 3100 series WidePath Upright Vacuum Cleaners : Home & Kitchen
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Amazon.com: MaximalPower Replacement HEPA Filter for Hoover FoldAway Vacuum 40130050 51000 Series and TurboPower 3100 Series Upright Vacuum (VF HOV850) : Home & Kitchen
Replacement Part For Hoover Foldaway, Turbopower 3100 Vacuum Filter - Walmart.com