6-Pack, Size B, Rite-Size Cartridge Refills

These are all standard products function as expected

They work fine! Best to get when on for a good price!

The box the filters should have been in was tore up. The soft part of the filters were tore and charcoal was everywhere.

About the only kind available. Soooo

always works well for my tank

Just like the original one. Does what its required

Good filters and a good price, works very well in. my fish tank

Use them in my marineland biowheel filter. Cheaper than pet store price.

great colors and clear water

Works well