Hoover HEPA Style Filter Fits UH72400, Part # 440003905 Hoover HEPA Style Filter Fits UH72400. Fits the following models: Fits In Model # UH72400, UH72409, UH72401 & UH72409DI. Compare to Part # 440003905. We recommend you replace your filter every 3 - 6 months depending on usage. This is a generic product designed and engineered in the United States by Crucial Vacuum. This is not a Hoover® OEM product and is not covered under any Hoover® manufacturer's warranty. Please check your manufacturer's warranty with regard to the use of non-OEM parts. Crucial Vacuum provides no warranty or guarantee with regard to the product or its compatibility with your Hoover® product. Any use of Crucial Vacuum non-OEM products in your Hoover® product is done at your own risk. The Hoover® brand names and logos are the registered trademarks of their respective owners. Any use of the Hoover® brand name or model designation for this product is made solely for purposes of demonstrating compatibility.