Filters are typically available with Allergen, HEPA and standard filtration. Genuine Hoover round and cylinder replacement vacuum cleaner filters meet the specifications of your vacuum's original filter and help to maximize the performance of your vacuum cleaner. Tip: Many vacuums have a primary and secondary filter. Replace BOTH filters for best results. See you manual for details. This pleated long-life HEPA cartridge filter fits inside the dust compartment in Hoover bagless uprights with a Twin Chamber System including these popular models U5260900, U5260950, U5262900, U5262910, U5263900, U5265900, U5265955, U5266950, U5268900, U5268950, U5268970, U5269900, U5269955, U52719RM, U52729RM, U57009RM, U5720950, U5720960, U5725900, U5725960, U5750906, U5752900, U5753900, U5753950, U5753960, U5753980, U5760900, U5760910, U5768900, U5786900, U66009RM, U6607900, U6616900, U6617960, U6618900, U6630900, U6632900, U6634900, U6637900, U6637960, U8120900, U8140900, U8147900, U8153900, U8155900, U8161900, U8171900, U8172900, U8173900, U8173950, U8174900, U8174950, U8181900, U8181950, U8183900, U8185900, U8187900, U8187950, U8188900, UH40020, UH40065, UH40110, UH40115CA, UH40125, UH60000. Also referred to as a Type 201 filter, 43611042 filter or 42611049 filter. Also replaces filter #40140202. Approximately 11 3/4" x 3"Change every 3 to 6 months.