Refillable Empty Filter Cartridges

Find empty refillable water filter cartridges in standard-sizes of 10x2.5, 20x2.5, 10x4.5, and 20x4.5. The reusable cartridges allow you to refill with your choice of filter media, such as carbon fines or deionization resin beads. The refillable cartridges fit in slim and BB standard housings for your choice of water filtration. Each filter has two polyester pads that prevent smaller filter media from escaping and making a mess.