3 High quality filters for iRobot Roomba Discovery series models (4XXX and 4XX) Series Vacuum Cleaning Robots. These filters help remove dust, dust mites, pollen and other allergens from the debris Roomba picks up. Filters maintain Roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you breathe. For best results, filters should be replaced every 2 - 3 months. Fits the following Roomba Discovery models» Fits all Discovery Series Roombas, Roomba Red, Roomba (sage), Roomba Discovery, Roomba Scheduler, Roomba Discovery SE (4220), Roomba Discovery (4210), Roomba Sage, Roomba Red (4100) and Roomba (4105) and Roomba 4230. p.small { line-height: 1; } p.big { line-height: 2; } This is a generic product designed and engineered in the United States by Crucial Vacuum. This is not a Roomba OEM product and is not covered under any Roomba 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 Roomba product. Any use of Crucial Vacuum non-OEM products in your Roomba product is done at your own risk. The Roomba brand names and logos are the registered trademarks of their respective owners. Any use of the Roomba brand name or model designation for this product is made solely for purposes of demonstrating compatibility.