Check the listing for details. 2 Pack New OMNIFILTER TO1-DS Whole House Water Filter Cartridges. Condition: New. Listed at 17.99 USD. Experience the purity of your drinking water with the OMNIFILTER TO1-DS Whole House Water Filter Cartridge. Designed to fit seamlessly with your existing Omnifilter system, these cartridges offer a comprehensive solution for removing impurities and contaminants from your water supply. Each pack contains two cartridges, ensuring you have a backup ready for replacement when needed, maintaining a consistent flow of clean, great-tasting water. The TO1-DS model employs an efficient filtration method that works throughout your house, rather than at a single point, delivering cleaner water for cooking, bathing, and drinking. With its easy installation and reliable performance, the Omnifilter provides a peace of mind that your water is safe and healthy for your entire household.