Refillable cartridges made by SpiroPure are durable empty cartridges that are ready to be filled with your desired filter media. Choose from cartridges that open at both ends or a single end. All empty cartridges come with 2 polypropylene pads that help prevent carbon fines or other small media from escaping the cartridge.
- Empty cartridge allows you to fill with the media of your choice
- Available in nominal sizes of: 10x2.5, 10x4.5, 20x2.5, and 20x4.5
- Includes 2 polypropylene pads to help contain smaller filter media
- 4.5” BB filters include a built-in 25-micron polypropylene core for a high flow rate and quality filtration